Perhaps it's the fluffy in me, but I do feel that a girl working alone can be vulnerable to a nutter, so I quite like to know that many of the WGs work in pairs, although I have to say my own preference is to see a girl working solo. In fact one of my regs works with another girl, but unlike some of the other previous posters, it just seems wrong to fuck her mate, even though she has a few good reviews on UKO. I have communicated a few times with the other girl by email regarding my reg's return to the UK, and she seems really sweet, but in over a year I have yet to see her in the flesh. Perhaps after my reg retires back home to Hungary at the end of the summer that will soon be rectified.
In fact nearly all the EE girls that I see work in pairs, and apart from two (if you punt in NW London you will know of the recently retired Xena and Nikki), I have never bumped into the other girl or her punter. It doesn't bother me at all as long as I don't run into another punter on my way to or from the shower as I frequently don't bother to put a towel around me, but then he would probably be more shocked than me!