I hope I'm not breaking any rules by replying to this so late, but I had a question: I'm not an expert at command blocks (or commands in general, to be honest), but would it be possible to create command blocks that input the "/weaponwield" command for all players and TC weapon types at the start, or would we just have to bite the bullet and manually do it for each weapon type (Cutlass, rapier, broadsword, etc)? I say "weapon TYPE" because even if you, for example, allow this for a cobalt rapier ,it appears to apply to all other rapiers. Needless to say I tried the command and it works, but I'm basically trying to find a work-around that does it for all players in the world, rather than them all having to input the command for every weapon or weapon type from TC. Just a theory that maybe someone experienced like yourself would be able to pull off.
*edit* for what it's worth, I found out that (/weaponwield current both @p) seems to work. I haven't tried it in a command block though. I just got 1 of each weapon type in my hotbar and applied the above code