Ok, I have years of great experience with Columbia hiking shoes, many old pairs still in my closet - they seem to last forever, though the soles will eventually thin out and lose their traction hence my purchase of the Kaibabs.  I've always worn an 11 in Columbias and they've all fit fine.  But lately their sizing has become unpredictable.  I ordered a pair of Columbia Tagori hikers last year and they were terrible and ill-fitting - WAY too narrow and very uncomfortable support.  I swore I'd try before I buy next time, but came across a great online closeout price on these Kaibabs and rolled the dice.
First out-of-the-box impression was that they look great.  Very clean design, unassuming with some tasteful color accents, good traction footprint.  They'll do well on the trail but equally fine as street wear.  They're also very lightweight.  When I put them on the first time, I had uneasy flashbacks to the Tagoris - these felt really narrow and pretty stiff (granted not as bad as the Tagoris).  But the price was so good I wanted to make them work, so I decided to give them a one day trial before returning them.  I'm glad I did!  To start, I removed the molded insoles and reinserted them to make sure they were properly seated.  This helped as one of the shoes felt awkward at first, but it was simply that the insert was off kilter.  By the end of the day, the shoes had loosened up a bit and I was confident they'd work long term.  After the 2nd or 3rd day they felt great - though I don't have any room to spare.  Couldn't pull these off in really cold weather with two pairs of socks!  They also offer very firm support, so if you like a looser, more flexible feel these probably aren't for you.
All in all I'm pleased with the Kaibabs.  They get 5 stars for aesthetics, weight, and quality but 3 stars for fit as they are still on the small side of their stated size.  If you decide to buy 'em, play it safe and order up a half size at least.  Great shoe at a great price if the fit suits you.