I would definitely go for a Linux version of Capture One, but I bet the two of us are in the very slim minority of users that would make use of such a port.
Though, with the unification of the code base between Windows and Mac OS X, I would also wager that has brought a lot of clean-up which would aid in the porting to other systems.
Still, I don't see it happening any time soon. But when Linux rules the desktops...
