I've been eyeing these for a while (since they were called the Gandolfs) but have always been hesitant due to the price and doubts about durability (I usually wreck approach shoes with the utmost quickness). The time finally came when I got a decent deal on them and the rest as they say is history.
-Ton of lacing, fit options
-Climb very well (climbed 10- sport route in them and lots of easier stuff)
-Very grippy, even on wet rock.
-They are expensive
-Sizing is funky. I usually wear a 42 in all the Sportiva approach shoes and trail runners and a 43 was my perfect size in these. For reference I am a US street 9 in most things.
-They are heavy
-They do not dry quickly if you get caught in rain (took a few days).
Overall it is one of the best approach shoes I have ever owned and I would certainly buy another pair, even at this price. Truth be told I might even pop on the Guide version when these bite the dust as I think the high top nature would keep more scree out (although these do a great job of it already), and just ditch any boots I may still have.
As Ganda may have said, these are possibly the approach shoe to rule them all. Then again my Tolkein mythology may be misplaced and hey these are Gandas not Gandolfs anyway!!!!