Surprised to see so few reviews of these, and wanted to give my impression after ~9 months because I want Sportiva to keep making them.
I hate heavy approach shoes--they make me feel clunky in scrambling situations when I want security. Previously my favorite approach shoes were the original Guide Tennie and the original Evolv Cruzer (insole removed). The TX2s climb and hike better than both, and the detailing is just more thoughtful.
CONS: They run hot and narrow--the rubbery interior of the shoe, while glove-like, is sweaty (not slippery though). I shredded the sheath on the chord lace somehow, which is annoying, but the lace still functions. If you don't have a narrow foot, they might not fit well (I pre-taped my pinky toes for the first month before some longer scrambles and had no issues.)
-Best laces on a shoe I've ever had, hands down. 10 miles hikes, no double knots, no unties.
-Amazing rubber. I've followed 5.9 in these easily and I'm far from a superstar. They're soft for edging, but you can smear into almost anything.
-Durable and comfy for a lightweight shoe. I took these up the East Ridge of Mt. Russell in a day and didn't want anything more. Great for easier sections of multipitch. I've worn these a ton and they still look newish aside from the lace I tore.
-The finish: Compression bands are great for stacking on the harness, heel pulls are minimal but you can actually get your finger into them (unlike most shoes.) Just great design all around.
In conclusion, if you're like me and sometimes slip your Moccasyms back on for a hairy J-Tree downclimb because you don't trust your heavy hiking shoes, get the TX2s. They are so confidence-inspiring. Seriously love this shoe--they've turned my beloved Cruzers into streetwear.