The original poster sorta sounds like a dick, IMHO, but I'll play...especially since he doens't need my approval.
IMHO, Rainman and Orange have it right. If a lady sits next to me, I'll say something like, "I'm not sure if I want you for company or not, but let's have a drink. If you see a better prospect, go for it." A big smile and a gentle touch to the back of the hand is often all it takes.
I believe that as long as you're honest, communicate your desires clearly and respect her time, it's all good.
It does piss me off when a fellow monger has no intention of sealing a deal with his companion, but drives potential business away for the girl with whom he has no intention of hiring. This is the classic "dog in the manger" deal, and it makes me want to knock the stupid S.O.B. of his barstool.
