I think there is a growing load of guys in bars also Russ as highighted by a couple of people nothing to do with the Oldies scene. In most cases, as the Soulville example mentioned, they are just Keb Darge tribute nights and the majority will be dancing to, and therefore the dj playing, the next cool thing next season. In most cases here its more about being a DJ, and sometimes earning decent money, than it is about the music.
I do think in recent years some of these have become the guys Mace talks about and are now doing there own thing, still in trendy bars, still playing to younger trendy people, and they seem to be sticking to it, but mostly in Cities, London, Manchester, and most of these djs seem to also visit all nighters, and genuinely be into the music, but I supect very few of their paying punters do.
The first lot are likely to buy the reissues, the second lot not. I really don't think this is whats killing the niter scene at all, which is surely a more relevant concern. From the playlists I read on here the majority are quite frankly unbelievable eye crushinginly boring and no imagination, despite being all originals. And theres the rub. Lets stop talking about format and talking about the music, the genuinely exciting new music and then I suspect you will find format becomes irrelevant. I have always thought if people are scared someone will play a boot they are following the wrong DJ's.
All from my gin soaked armchair with no liklihood of going out this century so happy to be told to shut up and mind my own business!