Body Glove used to make a hybrid hard sided gig bag. Looks like a high end gig bag with thin internal hard plastic shells built into the front and back. I have the bass version which I use for my 1977 Series I Long Scale 12 String Guitar, which is the large body with the point. They stopped making them years ago, but they turn up on the used market every once in a while. Most protective gig bag I've seen. Another protective gig bag is the Reunion Blues bag. They make a bass bag, but I don't know if it would fit an Alembic point. You could probably just call them and ask - (they're in Petaluma, about 15 miles south of Alembic) - they seem to be nice people.
Bill, tgo