Don’t know about the waterproofing, but sign me up for the stadium truck version - that’s more suited to my personal preference anyway. My coworker and I are still running our SC28’s, and both are still going strong after some serious abuse. My arms are starting to sag from all of the pounding, and my front end is so loose you wouldn’t think it would drive well - but it does!! I will replace some of the plastic parts soon and will more than likely buy the RC28T as well.