If RA produces it, definitely interested.
Wouldn't spend money on the first run of a non-RA custom build though -- would want others to test first and find it reliable. I don't know if it was development issues, the trademark, or other priorities that halted RA work on the 6.5. But prior to Alexander Arms releasing the trademark, RA would have had to get permission to chamber the cartridge, or call it something it wasn't. (Speaking of which, the RA website STILL lists a ".300-221 cartridge" . . . : ) Now that 6.5G is a SAAMI spec, there might be renewed interest.