In 2000 STP did an interview with a TV station in Montreal and this topic is touched upon. I don't remember how it comes up exactly, I have the interview on DVD, so I'd have to re watch it to give you an accurate answer, but I remember the guys talking about some song from 12 Bar Blues that they said they thought would be cool to put in their set list. It may have been Cool Kiss. It may have even been Dean that said that, if my memory serves me correct.
BTW, that interview is my favorite STP interview ever. They are all so upbeat and full of life. The vibe is strong that they are all on the same page. Scott is very healthy and happy. I've never seen it on YouTube. If anyone has it and knows how to post it you really should. It's a joy to watch.