Kylewrote a review of Scarpa Ribelle Tech OD Mountaineering Boot on May 13, 2019
For me, these boots split the difference between heavier mountaineering boots (scarpa mont blanc, salewa condors and ravens, trango cube, etc..., and something that's just a little too light, like the Salomon options.
I got them for PNW summers (some spring and fall as well). I've found that most mountaineering boots are hugely overkiller for glacier walks, slogs, and usual routes that are availible in the Washington (and Oregon) Cascades.
Personally I don't need a beefy boot to crampon, walk, kick steps, french, or even do a little bit of vertical, and these keep my legs and feet happy and help me cover more miles. Speaking of miles, I do sometimes wear them on trail, but they aren't the best with their stiff soles. However they are WAY better than bigger boots.
Speaking of the soles, they are indeed softer than your standard mountaineering boot, knife hard snow and front pointing... you can feel the flex in your feet. Also, since these boots lack a tall cuff, you need to engage your calves a lot more to stay on your toes. This is the compromise you make though, as they are SO light and comfortable. It's all about your use case.
They smear pretty good, plenty of grip, ankle articulation helps with 3rd 4th and 5th class rock. They edge like CHAMPS.
Waterproofness. Pretty dang good! My Salewa Condors are super bomber and these aren't far behind... They also dry out very fast. Oh, and the built in gaiter is AMAZING. NO MORE DORKY GAITERS ON MY FEET OR IN MY PACK. My feet stayed VERY dry on a 5 day high traverse through the Cascades over glaciers, snowfields, in early July. ALL of my partners had wet feet because they didn't bring gaiters (I wouldn't have either).
Ragged Ridge, Bonanza, Ptarmigan Traverse, these boots are perfect. I'd gladly do a number of routes on Forbidden with them, and I'd consider the N. Ridge of Baker (they take crampons, I use snow leopards, well). Standard Volcano routes in good weather, easy...
All and all... A costly piece of really nice gear that makes predicable sacrifices for some amazing returns in lightness, comfort, articulation, feel, and dryness (ankle gaiter).
I have a "Scarpa" Or "Salewa" foot in the standard boots, easy fit on these.