I had a spare Odyssey case ( from seed studio ) laying around for an old jetson Nano, and it does work. ( of course the board dont work yet, but that is another topic… damned PSU 
)
Only 2 of corners match-up with stock screw holes, so i just put spacers on the other 2 corners. Its diagonal across the board, so it seems solid enough to trust.
Of course the port access panel needs to go. Easy to make another out of a piece of thin plastic, or just leave it open.
I have the huge blue non fan heat sink at the moment, and it fit in the single stack case and was able to put the lid on.