See now other mods for forge provide keepsprint, but actually stop you from sprinting. The one on vape actually lets you keep sprinting (duhhhh) when PVPing. (When you're standing still it looks like you're attacking without keepsprint, basically a reverse pvp thing) It's blatant, but is undetectable and staff most likely won't do anything about it. I've been using keepsprint for over a year (as a toggle) and haven't gotten banned because of it.