Same here I have a couple of Jeff's cases, just picked up one for a 3 barrel set I have. Nice cases and as others have said Jeff will answer any of your questions. I would not hesitate buying another case or accessories from him.
I like your idea of the art work in the case. One thing to keep in mind. If you are looking at the true trunk case it would work just fine but if you are looking at the case there the handle is on the side, the barrels will move around a bit and might damage a painting on the inside if used on a regular basis.
Jeff also has oil bottles, bore pulls and rods as well as other accessories for cases. He has some labels as well and although not on his site his catalog indicates he will make custom leather labels as well....
