Dual/double gig bag recommendations please

That was my initial thought as well, the 330 might be in jeopardy of damage from the solid unless the 'shared' piece was very substantial. I also wondered if you'd be able to find a dual bag with such different dimensions for each side.

Of course, a dual bag would certainly simplify the carrying of two instruments. Have you thought of asking a firm like Hiscox what they'd charge for making you a 'composite' case, essentially fixing two cases back to back - or do I mean bottom-to-bottom?.