Agreed with jcbicouple: I would think that it's the same with anybody you'd like to play with, M or F. To maybe ease your anxiety, try talking about boundaries before the evening, maybe over the phone or email/IM if need be. If that can't happen and you are going out with the M, head to the bar, do a shot together (or a similar activity), and take care of the "paperwork". The earlier you do it, the more relaxed the evening will become.
As far as bi-vs-bicurious, I can see where the "bi" description would be more effective. I guess I didn't realize that people with the "bicurious" description often turned out to be letdowns. Using the "bi" title may instill confidence in the potential playmates that expectations will be fullfilled more often than not. If you're serious, take the plunge.
Good luck!