Originally, I'd been looking at shoving all of my Daemons into foam... but Casey was able to convince me that that was wasteful. I've got a great transport solution for everything except for the Soul Grinders and Bloodthirsters... why spend several hundred dollars to fix what ain't broke when I could focus on what is?
So, I e-mailed Battle foam the shapes and asked them if they thought fitting everything into a single tray would be feasible. After a bit (Origins happened shortly after my e-mail), they responded that three of the four shapes would definitely work... but that they wouldn't know if they could do all four without actually trying to do it.
I took the hint and decided it was my best chance, anyway. After a bit of fiddling, they got back to me: success! All four fit!
I might snag a PACK Plus to shove this thing in when they're released. We'll see.