Just use Bitshares Decentralized Exchange, nobody can tell you what you can or can't do.

And if you don't like Bitshares, you can still store your Bitcoin on the Bitshares DEX (Decentralized Exchange). You can send bitcoins from an account to another in just 3 seconds, no need to wait for 20 min for your Bitcoins to get trough. And with little to no feeds! (unlike bitcoin).

Still wondering why you are not talking about this, after all you did interview the main designer Daniel Larimer. The guy who designed steemit and is working on EOS ... Yea, that one.