In reply to Stone Muppet:
Approach shoes tend to be more stiffer & more supportive and also need to have a rather less roomy fit in the forefoot for climbing - which can however also make them somewhat less comfortable for long days / multiple days.
My mountain footwear these days is 5.10 Camp 4's if I'm expecting a lot of rock, e.g. alpine ridge scrambles, Inov-8 Flyrocs otherwise. The Inov-8s are lighter and more comfortable, but the 5.10s feel much more secure on rock.
Would only wear boots if I'm expecting snow. Totally don't understand the idea of big boots for scrambling / via ferrata, approach shoes are better in every way.