It's intended for now as there's no x64 equivalent of the gen_ff plug-in that I can use & I've still to actively start working on making my own modern skin engine plug-in.
Doing that would eventually remove one of the remaining reasons for the x86 build to have to keep relying on the 5.666 installer & reusing some of it's dlls for features.
The x86 build is not a downgrade to the x64 build as it has more features & more potential support compared to the x64 build which is just the pure wacup experience for now & with more time will improve in comparison to x86.