I have seen Provider 1 (P1) twice.  Both times were great.  Last time we talked quite a bit about sex outside the hobby.  She was shocked when she found out I had never done a threesome.  I have no doubt that she is bi, and really into women.  If anyone can be described as having sexual craftsmanship, it is her.  Tells you want she wants and likes and is majorly skilled.

Female Condoms.

Nothing spoils the total debauchery of a threesome than having to change condoms a dozen times. Female condoms will eliminate that need, not to mention its the closest feeling to "nothing at all" that you will ever find.

just to be sure that you two are compatible.

In any case, doubles are twice the physical strain on the system, so be well rested, hydrated, and limbered up, and you should do just fine.

Plenty of hookers claim to be into women...but in reality they're simply gay for pay.

My last doubles session was epic as the girls I chose were really good friends and really into working together. You might want to find out if your girls have any doubles reviews because if they have been together a few times doing this then they will know what they each like and excel at.

They already gotta be good actresses to fake being horny with us fat old fucks. If they do as well an acting job with another chick, dies it really matter? I think not..

My experience concurs. FCs are the only way to fly with two or more. No changing male condoms equals time and time is money ...

and personally, I don't really care if they are into each other. I am a selfish fucker, it's all about me.

I actually don't like it when the women are too much into each other. Football is a spectator sport, not sex. I want to be a participant, not a spectator at a lesbian show.

However some (seems like the OP as well) like to see the gals interact for a show.

Not a big fan.   The aesthetics suck and I am always worried that Mr. Happy will find his way around it.  I have been told that this is an irrational fear BUT I still have it - and the worry really takes the fun out of it.

My opinion - a double is a good way to meet a new girl.  The security/screening stuff is out of the way.  Takes some of the nerves out of it from both your point of view and hers.

but if you mean water, are we really so old that we have to prepare for sex like we are running a fucking marathon?

It's more for the girls' benefit and them having chemistry vs. clawing the other's eyes out. I would never work with some chick I did not know beforehand... ever.

For a while, I worked exclusively with my girlfriend at the time, and ever since then have offered doubles with various ladies that I am attracted to.  

Sounds like you're handling this right.  But be prepared...being in bed with two woman for the first time in your life...just let it ride as best you can.

ever been rimmed and blown at the same goddamn time?  

but please, only be honest about yourself. By "we" I meant the generic we (or was that geriatric?) and did not mean to include myself.

with a song!