Kyle McCrohanwrote a review of La Sportiva Crossover 2.0 GTX Running Shoe - Men's on September 26, 2016
Familiarity: I've put it through the wringer
Fit: True to size
I use this shoe for fast and light attacks in the Alpine, primarily the North Cascades of WA. I love this shoe because it is decently comfortable while running trail approaches, but then can switch to great grip and water resistance on snow and glaciers. I have universal strap crampons, so they work decently well with crampons. They're not meant for ice climbing, but I did end up booting down 65 degrees snow in the Enchantments with these bad boys one time! Grip on rock is also pretty solid, although the big treads can feel a little awkward.
Tread is excellent, so running across mild (less than 25 degrees) snowslopes is a breeze. Water resistant with the integrated gaiter, not waterproof totally. but you don't need gaiters with these. Warmth is moderate, but still not too hot for summer use.
If you want to be able to transition seamlessly from fast trail approaches to high scrambling and snow, these are your shoes. I've been able to slam 20+ mile 10k gain day climbs with these shoes now because I can jog the approaches and still perform in technical terrain. One of the best purchases I've ever made. They fill the gap between running shoes and mountaineering boots perfectly.