How can you be a BEAR in a market where you cannot establish a short position?  

Your either BUYING to OPEN (BULL) or SELLING to CLOSE (NEUTRAL).  No market I have seen allows you to SELL to OPEN (BEAR).  If you cannot SELL which you do not own you cannot SHORT, if you cannot sell SHORT you cannot be a BEAR!!  Of course in the world of ALT COINS you can also 'mine to open' but since your a net holder of the underlying (coins) your technically LONG making you a BULL.

A BEAR in true terms sells first to open a position and buys back to close a position hopefully at a lower price so he can profit.  If he buys back at a higher price he takes a loss.