Rick, Unlesss I'm mistaken, Dynarooz are ok for regionals. Dynothane is registered to include accessories, which, I think include shoes. Since the Dynarooz are mareted as a Dynothane product, with the D/T logo on them, I think they are OK.
There was an announcement at the last regional I enterdc a couple of months ago that specifically called out ABS as being not allowed, but that the Dynarooz were OK to wear. Since mine say ABS, I had to use my old Dexters SST5s. I do remember seing something in a PBA newletter about that, but I'll have look when I get home this evening.