"Great support, great grip, run quite narrow"
It could just be because I haven't owned a good pair of hiking boots in a long time, but on rocky terrain I feel like a mountain goat -- the grip on these things is incredible! I've taken these boots on a couple multi-day outings, and from what I've experienced so far I'm willing to trust them with a four-month backpacking trip I'm planning for the fall. However: to echo what some other reviewers have said, the toe box is quite narrow, and an oversized rubber cap prevents stretching and can cause some friction on the pinky toes, especially going downhill. Because of this I would suggest ordering a full size up, or if you have wide feet maybe going with a different boot altogether. Also, others have said that these boots wear great right out of the box, but for me they required a couple weeks of breaking in.
I bought these boots several months ago before embarking on two trips for archaeological field work, and I'm happy to say that they definitely exceeded my expectations. The full split-grain leather covering kicks water's ass, and my feet stayed dry even when we had three days of straight downpour and working in mud in Ireland. That being said, they're still quite breathable and kept my feet comfortable for hiking around the Andes in dry 70-80 degree weather. They are definitely a bit heavier than other boots, but it's definitely worth it for the extra durability and structure for long hikes and working at the dig site. I highly recommend this boot!!!