Im a stropaholic.
Before a shave i will strop 30 linen and 150 leather. After a shave i strop 30 linen 100 leather. After a honing i will strop 50 linen 200 leather.

Does excessive stropping help, i dought it, can it hurt, yes! If you dont do it right. Remembering that barbers only did a few laps before a shave makes me think they had a better idea on what they were doing than me but i keep stropping and changing up types a leather. I dont think ive ever noticed a difference in the outcome of a blade with different leathers, but why not. JMO. Its part of the fun of SR Shaving.