comicbookguy
Super Freak
Not necessarily. There are times when the piece is still removable on the regular version. For example, I had the regular Gambit, and his card hand was still a separate piece. Also, on Sabertooth, his head is still removeable. So, in either case, I could have purchased the piece separately if there had been one for sale on eBay or something.
But, to Centurion's point, there are also pieces that are not removeable. For example, my Asajj Ventress regular PF's head is permanently attached, yet the EX had a switch out head.
Hmmm strange I tried to buy a ex vampi head and the reg was not removable. At least now I now it's been confirm. Now I will never try to buy a reg and get a ex head for it.