I don't know about the copies but the real carbon smps are pretty narrow saddles.
I have a romin 143 that i feel perhaps is a tad wider than the smps i have. My smps range from 129 mm to 138mm wide. The carbon is 129 i think, or similar. But percieved width also has a lot to do with shape so you really don't know till you try it.
Yeah, it looks very narrow, comparatively. I'll have to give it a go someday soon, will maybe just stick it on another seatpost so I don't have to remove the current saddle and dick about setting it up again if I don't like it.
I don't know about the copies but the real carbon smps are pretty narrow saddles.
I have a romin 143 that i feel perhaps is a tad wider than the smps i have. My smps range from 129 mm to 138mm wide. The carbon is 129 i think, or similar. But percieved width also has a lot to do with shape so you really don't know till you try it.