I bought one of these bags today in the same colour scheme as the one Maxwell posted (brown with green interior) at the Brampton retail store. The construction quality is quite good overall; the interior fabric is nice and soft and the stitching is much higher quality than I expected.
The padding isn't quite as thick as my Lowepro bags but it's still decent. I may add an extra layer of padding to the bottom but the interior dividers are fine. For those concerned about colours the green interior isn't as bright as some of the pictures make it look and with the flap down the bag looks quite plain (a selling feature for me, I don't like having any logos on my camera bag).
The black bag has a nice shade of tan on the inside but I didn't take a look at the inside of the red bag. The manufacturer's name doesn't appear anywhere on the bag or the sales tags but this appears to be their product page:
VersaBag - Fidelity Electronics Inc.
I'm still trying out different configurations but it looks like 4 large zooms (probably as big as an 80-200 f/2.8, but my largest lens is a 70-210 f/3.5 that has lots of extra space), one medium zoom, and a body with a medium lens and a battery grip on it will fit in the main compartment.
If you're in the market for a bag this size I'd say go for it, I paid 3 times as much (80-something compared to $27) for my Slingshot 200.