There are also plenty of crap working homes aswell out there in all breeds.
From our last litter of 9 BMH, 3 went to non-working homes. Two of these had no previous blood tracking experience, however all three are putting in the time and work to train their dogs to a basic level to begin with, with the intentions of putting their dogs through the BMHS NA test next spring. Who knows, they may go on to become deerstalkers themselves, for love of watching their dogs work!
Show wise, there is little prestige when it comes to import classes. With only 3 or 4 BMH being shown in 2010 and few unrelated importations, the breed is a long way off from ever gaining their own classes! In my eyes, there is more threat of the breed being bred in an indescriminant fashion from the agility world, where a BMH is making a name for itself in the upper levels of competition.
All said, I agree that you need to look what is behind the dog and do your research before purchasing one of this breed. It seems at present that supply is outstripping demand and it is this kind of situation that could lead the breed into the hands of the wrong kind of owner!