Personally, and with all due respect to Alembic, I'd source my own case. I have both OHSC and ATA Flight cases from Alembic (both '04 and both new)...the wait is long and the price is high and I'm not a real fan of either case, IMHO.
I'd recommend a flight case (with wheels preferably)..try Calzone. For a hard shell case, try Ameritage..VERY pricy, but very nice.
I have a new custom HSC on order from Ameritage for my Heritage Golden Eagle Archtop Jazzbox...it has a built-in digital hygrometer and built-in humidifier (for winter) and de-humidifier (for summer). You can buy direct for MSRP or go to a dealer, like J. Hale Music, for a discount.
Why a new case? The OHSC from Heritage was shipped cracked when new, and the new upgraded Canadian-made case is a POS and has already caused damage to the guitar!
Just my $0.02.
Cheers,
Kevin