the 'bad' thing about them is when they get misrepresented as one or the other or the lineage info gets lost in the shuffle and they get bred back to a coastal or jungle.
think of it like having pure pitbulls, but someone gets a boxer x pit that they think looks really cool, then they pollute the breeding lines with the mixed breed.
from a 'pet' standpoint though, they are just as nice (maybe nicer) that anything else.