Lead rides? Sounds heavy. There I was stressing about my steel ride.
That wouldn't go down well with the short-fused drivers around here. Like I said, my answers are based on my own experience of these situations, and I already acknowledged that others' experiences may be different...
Never been on an LFGSS ride so not sure of dress habits but perhaps more casually dressed folk communicating nicely with drivers behind (ie a good, dedicated, smiling sweeper) is less likely to upset motorists than team kit lycra folk with their eyes down on their SRM doing through and off. Just a thought.
The question needs to be asked though - is it right that you sacrifice your own safety so as to not piss off a motorist? I'd reckon you'd get fewer punctures on rides where you weren't constantly moving left into the shit that accumulates on the sides of roads.