Re: Is BuddyPress the right choice?
@marybenett after looking at some videos the following link which discusses the idea of a separate section using buddyPress, where the majority of the website is standard. She does not address the idea of a tab specifically, but hopefully it could add insight to your query.
The presenter, Lisa-Sabin WIlson discusses it at the end of her presentation, which was given at WordCamp NYC 2009
here is the link: