The biggest problem I see with hybrids is that even when the ORIGINAL breeder is as transparent and honest as possible... with how often reptiles are swapped, that honestly and lineage may be accidentally or purposefully lost in subsequent buyers, which then muddies the gene pool considerably. If you consider herp keeping as "just a hobby," it seems like not as big a deal... but if you consider it to be a repository of genetics that might someday become useful should the animal become threatened or endangered, it becomes a very serious issue indeed.
So while I have kept and do keep hybrids (a jungle corn and a creamsicle corn), I'm not certain that it's a good thing for the hobby to be engaging in.