Probably crack once you crank the sub, and mounting the driver could be tricky... I suppose you could try an epoxy seal. I'd probably just buy a sheet of 1" MDF and screw and glue together a box.
Can you comment on the SQ on this? I understand that mounting as well as porting is going to be difficult but just wanted to give it a try. I can always go back to MDF if this cracks as pot is very cheap in my area.