Have't seen a PVC Rev-it suit. The rev-it rain suit I have isn't PVC, it's waterproof/breathable. It can wet through anywhere. I've had two. Pretty waterproof at first, until the waterproof coating starts wearing off against my textile motorcycle gear--it would probably last longer worn over smooth leather. Leaky rainsuit over never quite waterproof gear would keep me mostly dry. But cheap PCV over the same stuff kept me dry through hours of rain.
PVC raingear will only leak at holes, and you can duct tape over holes. Yeah you can use tape to repair waterproof/breathable raingear, but it can leak anywhere.
I think the best is raingear that combines PVC and fabric, but I haven't tried it. Should be more rugged than plain PVC.