would love bbbj from 2 providers together but concerned about the health risks.  Any advice from more veteran hobbyists out there about a tactful way to discuss issue or recos on providers?

BBBJ is rather low risk to start as long as there are no cuts, etc.

The gals aren't likely to pick up anything from each other, and you are not too likely to get anything from them either, so I don't see much to be concerned about.

Now, CFS is another story.  When this is done with two gals, a clean condom must be applied after each gal's turn.

I know this is off the OP but I'm a huge advocate of female condoms.  One provider I've seen a few times uses them, she explained that she doesn't use them all the time but when a hobbier is a little on the larger size its more comfortable for him.  I have to agree, unless a Magnum is used junior sometimes looks like an over-stuffed sausage in a regular condom!

Damn it all if she wasn't right...its the closest thing to bareback I've experienced.

They are so umcomfortable...i've tried a few times to use them eh i just can't.