Lets look at this in a monetary perspective. Dama's are the same price as the Adaman. stones used for honing. Dragon Bloods = / = Dama's in the forging process.
It takes 1 blue dragon stone (non tradeable and only once per day via HDD per character) and 50 red DBS.
Current market prices DBS 1 EC/EA. Dama = 28 EC/EA.
Dama x3 = 84EC
DBS x 50 = 50EC
There isn't a monetary amount on the blue stone. However, since its not tradable it would be limited. If the blue stone was tradable perhaps this suggestion in my eyes would be broken, but I don't see why we shouldn't be able to hone using these mat's while they're pretty much the exact same thing anyways from a market standpoint.
DBS Just requires PvE unlike the other forges.