Are you guys serious about sidestepping the clutch?
I haven't side stepped a clutch since I was 17 in a KE30 Corolla with about 30 horsepower!
I can't see how it would even work in a WRX with the footrest in the way?
Anyhoo, it's a brutal thing to do, borderline irresponsible to recommend to people who may not know better and has zero advantage over bringing the clutch to the point of release then letting it go. At least the driveline won't be as shocked then.