Yes, because those two instruments, a 5 er Dingwall, and a headless fretless will cover pretty much all of my bass gigs/sessions. But I've asked them via mail, they responded that the small 34 " scale headless will not be "tall" enough when reaching the neck support and velcro safety straps inside. It's the head that needs to get protetected the most in those cases (I mean gig bags). And the headless has no head so it won't "reach up" to the additional padded area. I wonder if that one will be in the risk of bouncing around inside the Mono case (or other).
The thing is, I can't get my local music shop order one just to try it out, to see if it fits properly. I could very well live with that I may have to do my own modifications to it to make this happen. But I think - that's why I was asking - if there's already another brand or gig bag model out there that lets you go modular inside, and rearrange things around to make it fit your instruments I might as well go for that one instead of the Mono bags.
I would love to have a case that is large enough for bass, but say, that double gig bag, could be re arranged inside to accomodate a dreadnought acoustic guitar (one only of course) two electric basses (long scales, short scales, headless in a mix) or one electric bass and one electric guitar, or - why not - two electric guitars. If they're big enough to carry bass guitars, they can sure fit in anything that is smaller too. The main culprit is to have - whatever you put in there - not to bounce around inside while transporting it.
Maybe some INFLATABLE thing? Some form that "blows up" and make it snugly fit around any body from of guitar and bass? :-)