Why can RDM use H2H weapons?

[Caketime]

I don't think even Pre-NA release, RDM had H2H skill (This is when we had C-Marksmanship). However, the level cap was at level 50. My best assumption is RDM/MNK must've been a thing back then.

They did at one point during the NA beta test, RDM/MNK was indeed a thing for parties.