I also have a couple Slingsavers, one on each side since I switch shoulders a lot. The only issue I've had is the thick wad of Velco under it that makes my shoulder sore if I don't have it positioned just right. I've been thinking of ways to eliminate the velcro but don't have a good solution yet.

“In a time of deceit telling the truth is a revolutionary act.”
― George Orwell

It's not over when you lose. It's over when you quit.