If I recall correctly, the optional RCM for TLD .808 was included in the downloads, but you had to manually switch out the files. That was largely irrelevant, however, since none of the rest of the game was designed or balanced for RCM - so it made the combat more interesting, but the campaign largely unplayable. There were massive balance issues in the .808 version anyway, and the RCM conversion heavily drew attention to them. That was a truly unfortunate side effect of trying to do this "optional", and a mistake I would not care to see repeated.
Presumably, according to various communication with the principal programmers, the intention on this version is for me to set up a customized model (base RCM stats plus variations for magic, trolls, and whatever), and then we tweak it from there. There is little logical reason to try to build and balance a version around Native stats - they're illogical and inherently lacking for game balance, even at best, and absurd and catastrophic to the game at worst.
That said, I am sure the first version will be a little rough ... I was not really involved in the planning phase for the various weapon and armor models, so I will have to try to catch up. So this will probably look like an initial rough version followed by a whole bunch of minor tweaks released over the next series of patches. That sort of refining is expected, and as it works out, necessary... especially on something this complex. I had sort of hoped that some of this could be done before the initial release, to speed the patching process ... but that didn't happen... so we play the cards we are dealt.