3.15 arrives December 16.

[Colorful]

Yes. Any fully completed 2.x cycle relic can be traded in to skip the first stage of any 3.x cycle relic, regardless of class. For example, you can trade in a NIN weapon to skip a PLD weapon's first stage, or a SCH weapon to skip a AST one. YoshiP has also said though that starting on a new 2.x relic weapon isn't worth it just to skip the first stage of a 3.x one, but since you've already them then that point is moot.....

Yoshida did also say that even he wouldn't want to do the first step of the Anima, two conflicting statements. The relic is quite easy now, so it's worth doing even for just the glamour imho.