yes mate, i would certainly urge anyone who is lucky enough to own one of the pricier channa to try and breed them. a very good example would be ornatipinis , they are only known from a small area in the wild , and the rate that they are being sold in shops without anyone yet managing to breed can not be sustained, they are a fairly poor choice for anyone to keep anyway because of there aggresion and temp requirments.
there is also the consideration that if you comm with other channa they may interbreed and for me i have no interest in seeing crossed channa , i would certainly hate to see the same happen to channa as has happened to a lot of african cichlids.
the main reason though is that it useally ends up pretty bad for the fish either the channa being stressed and not eating or the channa eating the other fish. they do without doubt behave diferantly when kept in a species tank they are much more confident and much more active ,
saying all that i have commed them in the past myself and i realise that not everyone will want a species tank , that is down to personal choice , all i can do is let people know what i tried in the past and what has worked and what has not.
cheers col