I have a set of these I bought from an old bike shop - they were just there collecting dust as this shop doesn't see a whole lot of 'cross riders. For a clincher they look like they'd be good in muddy or loose conditions (except for the side knobs that are fairly closely spaced).
Wondered if anyone had any experience with them, if I should bother mounting them up later or not.
No rush, tho - I've got some Ritchey Zed's in a 42c, and Panaracer Fire Cross in a 45 that I'm using now to go play on the trails (man, I love those Zed's... hope I don't kill 'em before the racing season starts up).
my own experience is that they're terrible in mud, and those same side knobs caused clearance problems on tight frames or in muddy conditions.