I have a pair of black, all-leather bronx and they are great.
I travel quite a bit and I wanted a pair of shoes that I wouldn't be too casual out to dinner, but I could walk on a trail in, and work out in. The Keens have really fit the bill.
I just wore them to a trip up to Toronto and it was about 15 degrees F the three days I was there. I had no problem with moisture or cold. I also have worn them while traveling to the Caribbean and they were great in warm weather.
I especially like the beefy toe bumper and I'll bet we will see that style of toe on more shoes/boots in the future. I can see tactical boots using that type of toe because it holds up to abuse so well.
One more thing, I got mine from Zappos and it was a great experience. No shipping and they shipped them 2-day. The first size was a bit too small, so Zappos shipped another pair (free) before recieving the smaller pair. The shipping for the returened pair was even free, they even include the label. You can't beat that with a stick.
When they make a hunting or backpacking boot, I'll buy them.