Sure, there are others out there. Most may be a bit larger on the inside for the smaller Mark VII combo. Same for the JP2C combo. Mesa used to have road cases a long time ago. Not sure how long it will take to turn a new amp into a relic looking one.
I have carried my Mark III combo around for some time, never had a case for it. Sort of wish I did. I managed to keep it like new, so it was still in mint condition when I sold it. Back in the 90's it was just a change of location for the band to practice. Never made it to any gigs as I quite the band to pursue my college education since I had to move away for that.