It depends on the crowds you hang with if POR has a good reputation with automotive products. Some people seem to think POR was created by a higher power to save their rusty cars and others (like me) wish they would fold and go bankrupt so people would learn proper restoration techniques and the cars would actually last awhile.
Since I am very biased against them I would personally assume that their floor products would be just as bad as their auto products, a very temporary good looking fix to a problem, how long do you want your floor to last.
No offense meant to those that think POR is the greatest thing since sliced cheese, please keep using it. I just wanted the original poster that not every one thinks POR is any better than the best snake oil.