...haven't caught on with providers  for several reasons.  They take a little longer to insert to insert so the action slows down while it's going in.  Also, it could be embarrassing for the provider since it can be a little awkward to insert.

The FC2 isn't readily available in stores; they're usually only available online.  Another factor is cost - male condoms are as little as 25 cents each while the FC2 is over $2.00 each.  Given the K-girls volume, it's understandable why they wouldn't use them.

Most providers won't use condoms brought by the client.  There's always the possibility of tampering.  You can try bringing an unopened three-pack and see what happens.

It's not really a cost effective measure and unless the demand from the hobbyist side is strong I don't think it will fly anytime soon. You could always ask the booker if the provider is willing to try. I just have my doubts that you will get an affirmative answer while in their domain.

I think it's really great for anyone doing doubles and they seemed to agree.  For one on one, they preferred traditional condoms.  They thought, and I agree, FC looks rather silly hanging out.