I don't know about high-caliber climbing, but up to 5.10 these do fine, working well at edging, smearing, and jamming. They're comfortable, wear-for-hours type shoes. I bought a half-size smaller than my street shoe, and have been climbing outdoors in them for about a month now.
I don't think the rubber is quite as sticky as C4 but they've held up well to the rough and dirty rock of the Adirondacks and did fine on several trips to the Gunks.
And it's a bright, colorful shoe; easy to spot in the brush at the base of a wilderness slab. Matches my pants, too!

They are not aggressive. But tight enough to be used to learn almost all movements in a rock wall as a beginner. They are stylish. Although the dye turns your feet in red, it washes off easily.
I bought them half size smaller than my regular shoe size and they fit well; but I don't know why sometimes they make strange sound when I walking with them!

I just lost a pair, but they were very comfortable and great as my first shoes. i disagree with the whole foot-turns-red thing. maybe my feet don't sweat much, but it was barely noticeable - and who cares anyway? wearing socks is just silly. I got my pair about .5 too tight, and I think that hurt my ability to smear somewhat.

As for the appearance, I got about 8 comments from people on how cool these shoes look. For example, "If I had shoes that looked like that, I'd never take them off." They look better in person than in the pic.

sizewise, i bought mythos for my next pair and the sizing was identical. now that I've used both, i might prefer these to the mythos.

these are great climbing shoes, I would recommend purchasing these .5 size smaller than street shoes. They stuck well to granite and wore comfortably for an all day climb at Smith Rock. warning - wear socks the die turned my feet red.

A bit tight, but still a pretty good shoe for a beginner like me. I'd recommend them.

great shoes! i am a beginner and was worried these shoes may be to aggressive but they fit well, grip great and smear better than the Mad Rock i was barrowing from a friend. have not used them outdoors but they are great for indoor bouldering and top rope climbing. (and they are much more stylish then my climbing groups shoes lol) love my Nagos!

I got into bouldering last year, and going to a la sportiva demo, really liked how these shoes fit. For someone who does want a very aggressive shoe with a lot of camber, this shoe is a great choice. It fits really well, has really great build quality, durable materials, and is super versatile. If you are a really advanced climber, you will probably want a more aggressive shoe. But for the recreational climber looking for a great, versatile shoe, at a great price, this is a really good choice.

I just started indoor climbing recently. I've very happy with these shoes. The laces help the shoe fit my foot a little better. The red dye does turn my feet red afterward, but it comes off well enough in the shower. I would not wear socks with these shoes. I think its a great beginners shoe- the curve in the sole isn't too aggressive, but there is a slight curve, which allow for a comfortable fit for a couple hours at a time.

great shoes. i have been climbin for four years and just wanted to move up a step with my gear. these are great shoes. especially for the price. they grip the back of my ankle very well. the only down side-they make your feet red the first couple times of using them. it washes off. but nothing worse than that.

I wear an 8.5 in street shoes and got the 38.5 and they are too big. After trying them on initially I thought because they were snug they might be too big but after trying them out in the local gym realized exactly the opposite. Probably good for crack climbing or long days of climbing but the edge and the rubber are definitely not suited for any kind of aggressive climbing whatsoever.

I bought these cause they are cheap. I've taken them up hundreds of valley, wall and alpine routes in Yosemite. They are great for all day comfort, and perform just about as well as any other shoe I've had. They have pretty good durability too, as I still have mine after a LONG season in Yosemite.
Great for crack climbing. I've climbed 5.12 face with them without much problem, but they don't have the best edging so I would get another shoe for strictly hard and technical face.