Funny you mention the purists, being that at some point (he later came around) Huneker had "Niagaras of abuse" for poor Godowsky's treatment of some Chopin. (Alistar, please allow me the quote from Sorabji, I mean it in the fairest use you can imagine,)
Just listened to the Invitation to the Dance transcription (Moiseiwitsch on the Naxos Great Pianists). Absolutely charming! Unfortunately sounds/looks too hard for me to play :-( Still, I had always dismissed those 19th century transcriptions as not worth listening or playing (well, without actually knowing any of them) and now I tend to think more and more that I was wrong. In any case, good motivation to try to get to know more of them. This kind of discoveries is one of the main reasons I enjoy this forum so much...
19th century transcriptions seem to have been out of fashion for a long time. A previous teacher of mine turned his nose up at the lot of them and dismissed them all as unworthy. I guess that people like him turned generations of pianists away from this fascinating genre.