What makes you think that BTS won't be ported to EOS or at least fully compatible with any dex running on EOS? Remember, Dan created both systems.
Dan would have to be a complete idiot to ignore Bitshares and let it fade. I don't think he's a complete idiot. BTS can help EOS and I think Dan knows that. (and EOS can help BTS too)
As long as my BTS get converted to EOS in that case everything is smooth sailing. Im Holding BTS too - I'm a Larimer triad supporter.