mike wrote a review of Evolv Nexxo Climbing Shoe on July 16, 2014
Familiarity: I've used it several times
Fit: Runs small
So I've been wearing these exclusively for a few weeks to break them in over a wide variety of terrain - indoor, granite, polished limestone, and fresh limestone. They are now well-broken in and have been through enough different movement styles to give them a clear review.
I sized the same as my Shamans (which is the same as my street shoe), and the first two rounds I questioned whether they would fit - it is definitely a smaller volume shoe in all directions compared to the Shaman, and it was some effort to get them on. That said, after several hours climbing in them over several sessions, they have adapted well to my feet - easy to slide on, still a tight fit but comfortable enough to wear while working a route for over 30 minutes.
The pros - very precise toe, especially on steeper terrain. For problems and routes that require getting the toe in on a small hold and keeping it there, these work great. I was really impressed by how hard I could edge down on miniscule footholds on vertical climbing. Heel and toe-hooking are what you would expect - a moderately deep heel cup and the single strap keep the shoe on even when yarding hard on a heel, and the extended toe patch scums into the wall just fine.
Shoe gets a little warm for extended wear, but I think this is every shoe that has a large rubber toe patch for hooking - climbing rubber doesn't breathe. Rubber is a little thick to start, but to be fair, it does extend the life of the shoe significantly, and I rarely think the extra 1 mm of rubber is what is ever going to hold me back.
General Consensus - super precise shoe to point directly into holds and gain good purchase; high performance with a good level of comfort once broken in. Sized similar to Shamans, especially if these are being used as the SEND shoes, but might be worth it to go a 1/2 size up if it is used as a training pair.