Originally Posted by
jefmcg
Not when you are talking about brooks etc. But the OP was thinking about something like this

and wondered if there might be a problem on a folder.
It doesn't seem like any of us have tried such a seat.
I tried this one
http://www.hobsonseats.com/ (X2) and did not like it at all. I hope that it will be easier on my rear on long rides but could not ride on it more than 200yd. It just feels unstable or as the OP said, it has control issues.
Ended up with an Adamo
http://www.ismseat.com/products_racing.htm based on a recommendation on this forum and it works very well for me. Got it here
http://www.frontofthepack.com, they let you try it in store on stationary bike.