Just got a pair of size 29s in the mail. Tagged inseam is 32".
They're nicer than I expected. Nice color, fabric is pretty beefy, slim-straight fit, and I like the button fly. I don't have any experience with the rigid variety, but I'm almost totally certain that these are not they. Definitely not selvage.
It may be a toss-up between these and the WvG predator chinos I picked up a couple of months ago.