Buddy has one which we've used several times.  That same model.  He also has a 'yak of theirs, just to show how much he likes their products.  

Durable, roomy, can take a lot of gear.  We've had it loaded with 600+ lbs of gear and people, easily 8" of freeboard.  Very stable.  Could likely load up with 1000lbs.

My complaints:
1 - The floor is a bunch of aluminum poles.  Rough on the knees.  If it's not standard, you'll likely get cheaper & better knee protection than what Packboat sells.  Closed cell foam is cheap.
2 - The seats are basically aluminum plates.  Rough on the bum.
3 - The seats have a tendancy to pop loose with the standard attachment.  Some re-usable zip ties secures them fine.

It will never perform better than a rigid hull, but it performs just fine.

Packed it takes the space of two hockey bags.  One for the skin, one for the poles.

With practice assembly takes <30min.  I wouldn't want to do it alone, there are some tight fits.

Re-usable zip ties are very helpful with some attachments.  Maybe not out-of-the-box, but certainly after a few years.  Re-usable zip ties are awesome anyway.