On most exchanges, HBD is not as liquid as hive. If you look at Coinmarketcap, the volume of HBD traded across all exchanges in the last 24 hours was only $290,947.
Whereas the volume of Hive traded across all exchanges in the last 24 hours was $268,096,463.
HBD will struggle to get traction as a stablecoin unless volume and liquidity improve.
RE: Hive Backed Dollar (HBD): Taking Things To The Next Level