Thing is with xcp is they are just arbitrary tokens and completely unnecessary, correct me if Im wrong but I seem to remember when researching when counterparty was first announced that the XCP tokens were a) not needed and b) essentially worthless.
they can be taken in escrow by the counterparty protocol (currently impossible with btc afaik) - so they have a purpose, but until know they are almost unused due to the mantra of the core developers that everything which can be done on the counterparty protocol with bitcoin, will be done with bitcoin.
Thanks for jogging my memory I knew there was a reason the currency itself was essentially worthless and unused at this point in time.