They're not calling it wireless b/g... that was just my own shorthand. It's still officially 802.11B/G.
And if a B card connects to a G access point, that access point slows down to B speeds for everyone. It can be addressed in higher-level access points (not the kind you find in your local computer store) that can actually create multiple wireless environments... multiple SSIDs for different groups of people. So all the B people could access VASKEZ-B, all the G people could access VASKEZ-G, and the rest could access VASKEZ-BEER.
No, waitaminnit... that's JOHNNY-BEER....
In any case, I wouldn't buy a B card or access point any more. I would only buy Gs today.