My first post here, and I thought I'd share my experience with both the Red Wing GT and the Wolverine 1k. I've had the GT in black cherry for about a year and a half now, and picked up the Wolverine just today in the rust color.
Sizing: The Red Wing feels narrower, even though it probably isn't. I think this has to do with the stiffness of the leather compared to the Cromexcel on the Wolverine. The Red Wing also seems to run 1/2 a size bigger than the Wolverine. I have an 8.5 D in the GT and a 9 D in the Wolverine. Length is about the same, but the toebox on the Red Wing is a bit wider on the outside.
Feel: The GT is heavier and feels heavier. By a lot. I'm exhausted by a day of walking around in this boot. The Wolverine, however, feels much lighter. I just walked a couple miles around downtown San Francisco in them and I'm feeling just fine. In addition, the heel counter on the GT is harder, and so your knees, hips, and spine feel each step a little more than you do in the Wolverine.
Aesthetic: We'll see how the Wolverine 1k breaks in, but the shape is definitely more elegant, to my eyes, than the GT. The GT is much more rounded, and in the 1.5 years I've owned it, the toe area remains kinda bulbous. I don't think it's too extreme to be a major concern, however, and shoe trees help. The color on the GT is far more even (consistent), and takes a nice shine. The Chromexcel on the Wolverine is, as you all know, duller and waxier. I expect it to develop a nice patina. My GTs have gotten a little scuffed over time, but some nice burgundy boot creme wax keeps them looking fine.
In conclusion, the Red Wing Gentleman Traveler is a heavier, less comfortable boot. They took a solid three weeks to break in, but have never been as comfortable as the Wolverine 1k is, even brand new. I prefer the commando half-sole on the Red Wing, and will probably have a cobbler put one on my Wolverines eventually.
P.S. I seriously considered the Alden Indy boot. I don't intend to start a war here, but I think the popularity of that shoe is based mostly on goodwill from another era. Every example I looked at had some defect in the stitching. Different examples of the same boot in the same size with the same leather would fit differently. I have heard of quality control issues at Alden from others on this forum, but I didn't think these would be so obvious. Finally, the Alden has a rather bulbous rear and made me look like I had cankles. I wanted to like that boot. I really did. Maybe someday I'll find a pair without the problems I observed, but until then I'm very pleased with my Wolverines.