I discourage the use of the name "Kolemak" for these remixes just as I did when some other guy wanted to use it. It looks like a misspelling of Colemak which will lead to confusion. At the least he should've called it Korimak or suchlike, even if his changes are small.

It is entirely possible to move around the rarely used keys like that and end up with something that suits you personally better. I gave this much thought before deciding to go with the full Colemak package myself. It's not loyal towards Colemak, but such loyalty was never expected nor demanded.

The most common such phenomenon I see is that some users don't need the ZXCVB keys to stay in place and don't mind relearning a few more keys, so they change that part around a bit. Korivak is right in that the J gets a somewhat too good placement compared to its rarity in English, so his changes are sound from his point of view as long as he doesn't care about moving rare keys and losing shortcut compatibility. Interestingly, the J is somewhat more common in other languages (like Spanish and my own Norwegian) so non-native English speakers will probably not care to make such a change. Even if Colemak was designed for English, it seems surprisingly good at many other languages too.

Of course, whenever something cool like some new utility or graphical design happens in the Colemak community these lone wolves will be left out of it. But that shouldn't weigh heavily for them I guess.

[edit: I found a picture Korivak posted only last month of his keyboard. Seems he has stuck with the J-B and his other swaps, but chosen not to make a new name for it or promote his changes which is what I might've chosen to do too: http://korivak.org/images/colemak2.jpg ]