You should be able to spec through jewel sockets with weapon set skill points.

I wanted to get a to a shock magnitude cluster but could not do it since you cant pass through jewel sockets with weapon set skill slots.

It would be interesting if you could spec through jewel sockets with weapon set points and have jewels that only apply to that specific weapon equipped, enabling more possible builds with weapon swap.

Know the post is a couple of days old, but is this specifically not meant to be a thing?

Doesn't completely invalidate the Witch Hunter's Weapon Mastery talent (or weapon set skill points in general), but sure devalues it a lot if that is the case.

Been having fun playing Mace / Grenades on Merc, but diving deeper into using Weapon Master and weapon set skill points has left me quite limited being blocked by Jewel nodes.
(no doubt this concept would be more viable with dex or str/dex melee weapons currently not implemented)