User blog comment:B214/Question and Answers 3/@comment-24098614-20140726044941/@comment-24549585-20140727132931

Here are the facs as we know it.

1. If you get your EPs removed you die.

2. No 2 different types of EPs can exist in one body at the same time.

3. Once an EP is used on a person it cannot  be used on someone else.

4.What ever EP you carry you always are that piece, even if you get your own EPs you are ALWAYS still a servent of your master (king) even though you have your own peerage. You will never be at the same level as you master.

If Ise becomes a High class devil he is the King of his peerage but he will always and forever be Rias's pawn.

And stop lurking as a wikia contributor regisiter and talk in the open I have more respect for otaku4469 than a lurker.