Zetor
Arcane
Yeah, it's just like a party member's inventory (in the 'status' screen you can switch between them with left/right shift or ctrl depending on control scheme, iirc). It IS bound to the party, and I think it gets nuked if you completely disband the party (not sure, I've never done that).
edit: in the offline manual, it's sorta-explained under "Character Screen"
edit: in the offline manual, it's sorta-explained under "Character Screen"