Since we’re talking experimental beta stuff we used to be able to use drakefires in VT1 and I don’t see why RV couldn’t use them now, especially after acknowledging Bardin as being a former ironbreaker.
The only possible sticking point is the interaction with talents. Most of them work fine, but the one that gives you power for being out of ammo wouldn’t function (unless they got rid of that one I forget). And RV’s main draw is ammo sustain which drakefires do not need. (then again throwing axes don’t need ammo either).
I think it would work.
On a related note I don’t see why IB can’t use throwing axes either, he would get three of them just like Slayer.