I don't "date" per se - but we tend to only get involved with people who already know us (and anyone who knows us socially, knows that we are together) or that we have met through a venue where the poly is disclosed up-front (like MeetUps or on OKC).
Since MrS and I wear wedding bands and Dude lives with us - it would be pretty hard for us to keep the poly a secret from anyone that really got to know us...so it is unlikely to ever be a problem.
Me: poly bi female, in an "open-but-not-looking" Vee-plus with -
MrS: hetero polyflexible male, live-in husband (21+ yrs)
Dude: hetero poly male, live-in boyfriend (3+ yrs) and MrS's best friend
Lotus: poly bi female, "it's complicated" relationships with Dude/JaneQ/MrS (1+ years)
TT: poly bi male, married to Lotus, FB with JaneQ
VV and MsJ: bi-women with male primaries, LTR LDR FWBs to JaneQ
My poly blogs here:
The Journey of JaneQSmythe
The Notebook of JaneQSmythe