I was thinking more of a different situation.
For example: I'm toodling along and come across a narrow lane - too narrow for a car to pass safely. As such, I should take the lane. After taking the lane, a friend turns in from a side street and joins me. Since I'm already in a lane taking position anyway, does it matter if he rides at my side rather than behind? Just curious, I've never personally heard of any applications of FRAP around here...