I realize this thread is old at this point and some models change however I did want to weigh in on Kayland boots in general. I have a couple pairs and really like them. I have the Contact Duals and Vertigo Highs.
Vertigo's are more a daypack boot in my mind with a little lower top on them. They are fairly light but have held up to some heavier loads and they are my go to boots for an all around boot. They have held up well and been very durable for me. They have a full nubuck exterior.
The Contact's a little heavier duty backpacking boot. A little taller, just about ideal in my mind. These don't have a full leather covering but aging very well.
Both boots are very different from one another. Both fit my narrow, flat feet well and are very supportive to my bad feet.
Pros on both : good toe rand on both, both fit narrower feet well. The eVent waterproof membrane is the best I've ever experienced as far as venting. Really keeps your feet cool in warmer weather. Always has proven to be waterproof in my experience. That might be the best feature but I really like these boots overall.
Are these the hardest core boots out there? Well, not these models, but Kayland's mountaineering boots might very well be up to the task. I'd never heard of Kayland until reading several reviews from Backpacking sources and they were highly rated. Glad I decided to try a set. For me, I like them much better than Asolo's I've had, and certainly older Danner, Vasque, Raichle's, etc I've had over the years. I think worth a look anyway
Now my newest Love......Crispi! Just got a pair in a couple weeks ago. I cannot say enough good things about them so far. No hardcore testing at all, just great fit, stability, and comfort. Can't think of anything negative on them yet. I got the GTX Wilds. Mid grade insulation that supposed to take you down to -20 if you are actively hunting, hiking. I cannot make any judgements there although they do seem to breath pretty well. I ordered a pair of Crispi's and a pair of Meindle's. For me, there was no comparison but the Meindle's are built on a wider last and much more high volume so I can't condemn them for that, they just didn't fit my feet as well. Still, they are a solid boot as well. Love the Crispi's though - just something about them! Will most likely buy another pair. Have my eye on the Nevada's.