I did think there was another thread for that one somewhere...
I've had a chance to crawl around in one now. It's very much what most people said they wanted - an ACCC for fullsize trucks.
My biggest disappointment is that the rear bed-hatch area is essentially the same as the ACCC - namely it makes for a very narrow rear opening with the rear portion of the bed up while the main bed is down.. I TOTALLY understand why they did this - the pop-top/bed portion of the assembly is identical to the regular Canopy Camper, this made it quicker to produce and limits the number of unique parts they had to manufacture.
That said, I would REALLY have liked it if they'd built it with a longer cabover and allowed for some more space aft of the bed platform so that one could stand up, move around, and possibly even do something like make coffee while the main bed platform is down. The "split bed platform" idea has never made sense to me since I see a 100% chance of waking my partner if I had to raise it while she were sleeping, and if I'm going to leave it up all the time, I'd rather just leave the thing out altogether. Having moved around in the Alu-Cabin, I almost immediately ruled out any ideas I'd had about using it for my intended layout - the space available aft of the bed platform is less than a shoulder's-width across for me, so if I want to turn around while the bed is down, I literally have to duck down to get my shoulders below the bed, pivot, then standup again.
The available overhead with the goose-gear system in place is also such that one cannot comfortably sit beneath the bed when the bed is in the down position. You could crawl in there to sleep, but if you plan to sit while the bed is down, you're again limited to that rearmost 12" or so, with the rear platform in the up-position. All in all, I think the Alu-Cab campers are a great bit of kit for either a single user, or two campers who are in-sync with their sleep/wake cycles. If you're a couple with one partner who likes to get up early (or stay up late) and be moving around while the other sleeps, the Alu-Cab is going to challenge you. For 3+ people (thinking a couple plus 1-kid scenario, like ours), even the Alu-Cabin is usable only as either a bunk-bed-in-a-box, or as a living space, but not for mixed use.