I heard they can be used on both carbon and aluminum (if you make sure there are no metal shavings in the pads when changing them out to carbon).
Anyone use them or something else that works for both.
I use them with my carbon tubulars on race day. ive also used zipp carbon pads. i will never go back to zipp pads tho because i feel these have alot more stopping power. as far as aluminum rims, i have no idea how well they'd perform, but i imagine they'd be just fine. only thing is that ive heard carbon specific pads get chewed thru pretty quick on aluminum rims. hope that helps.
I used my swiss stops for half of the season last year. They work great on zipps and worked well on my aluminum training wheels. My experience on the aluminum rims is that they take a little longer to slow all the way down. And they do wear out pretty fast (July - end of September) riding 6 days a week in pretty hill terrain. But bottom line these things are tight and you should get them over any other carbon pad.