Don't know anyone who's tried, but just looking at them I would think they wouldn't fit. Assuming you have a 99+ SS, the mirror mount is a small raised oval shape. The SBK mirrors look to have a flat more rectangle shaped mount. Good luck though, I hope it works because it would look sweet! Post some pics when you're done.

I hear ya on the bar ends... I didn't like them much myself until I gave them a try and saw how well they actually worked and looked on the bike. That's part of the reason I went with the inexpensive mountain bike mirrors first. Now that they're on and I've tried them, I'll probably go with a set of CRGs after I get a few higher priority things taken care of.