They fit well, are as comfortable as sneakers from day one but probably require some break-in before hiking. I usually have to wear gel inserts but have not had to with these.
They are not advertised as water resistant, but I stepped in some mud that turned out to be real soft and one foot sunk in up to the boot tops. A few hours later I hosed off the muddy boot and it came fairly clean. No mud or even moisture inside. They look really good, and make my size 11-1/2 feet look a little smaller.
Time will tell if these are good on a long hike. I'll update. This is my first pair of Hi Tec boots for myself.

Update Nov 11, 2010 Have put quite a few miles on them including some rough terrain, still holding up well. Some wear on the soft parts of the soul and stitching starting to come loose. One problem is that laces come untie often no matter how tight I tie them. Need to remember to get some different laces.

Update Nov 2, 2011 They are pretty much worn out. The stitching is coming out and dirt gets in. They were comfortable while they lasted. Since I do not wear them regularly they should have lasted much longer.