I've used this boot extensively on ice, mixed, and alpine climbs around the 48 states, Alps, Canadian Rockies.
It is light and simply climbs amazingly well.

The gaiter keeps snow out very well, similarly to the Scarpa Phantom Guide or a LaSportiva Batura.

For sizing comparison, I use a 9 in the Eiger vs a 43 in the Nepal Evo.
The materials used allow the boot to have a nice, small profile, but still provide a decent volume. I have relatively low-volume feet, and adding some Superfeet was crucial to getting my fit perfect and preventing heel lift.

I wore them for a 14er up Mt. Langley and they did great on dirt up the approach and awesome in the snow. No break was needed and didn't get any blisters going back down 8000' on rock and dirt with them. The sizing is right on to regular shoes

Well that is how these boot are made. I cant believe how tuff the boots are! Most recently I climbed little Costilla New Mexico. I had no problems. It was very cold and windy with deep snow! I never had a problem with wet feet. The foot never moved any time in need to stand up on the toe or kick in the snow. It felt like part of my body!

I write a lot of pretty good reviews - I might have to downgrade the others to make sure this one really shines!

I have no idea how it works, but these boots are incredibly comfortable, even on huge approaches. That doesn't even start with how awesome they are for actual climbing - the flexibility of the top mixed with the sole stiffness make these feel like magic on rock, ice, or anything else you can throw at it.

Considering how light these boots are, they are surprisingly warm, and it's hard to think of any other boot the same way again.

I spent some time hiking in the rain, glacier trekking, and ice climbing in these in AK this fall. There were great. Lightweight and kept my feet dry. The built in gaiter means you don't need a regular gaiter... one less thing to keep you from getting to the ice quicker! A nice upgrade to the Cholatse, which was also an awesome boot.