You could always do something crazy and take your own and then talk it over with the provider when you get there. I have certain ones that I prefer too and yes I keep an eye on the expiration date.
I always have a few my size in case they are needed. One texted me and asked if I could pick some up, she was coming to my out call and didn't have my size with her. Other than that I assume they want to supply them for reasons mentioned above.
Ofcourse we stock up on all kinds...it's a part of the "job". However, if a guy wanted to use one he brought, I would have no problems after inspecting it (for the s*** y'all talked about earlier, which is just cray-z to me, btw & if its one my coochie doesn't like) and if it checks out, I don't see why not.
Never had an instance where he brought one/type I didn't have.....IF he's brought his and seen I have the same anyways we end up using mine (he leaves the extras he brought most of the time also *shrugs*).
No...I know how old MY comdoms are, and my sensitivity to my own ... And it's just safer. Now , a gent can make a request and I'll purchase them to my discretion.