I have one of the originals, before Steve sold the company.
It's a very nicely made bag with very high quality materials like all his luggage. I have his expedition bag (still being used since the mid 90's and it's been thrown about), his Holds Everything Tackle bag (I just use as gear storage now), and this wader changing bag.
It's good to have the separation for the wet wading boots below, and also the roll out changing mat, but the compartment at the top is a little small and doesn't fit that much gear. It's not big enough to hold say waders, tackle, lunch etc. I'd use it for a quick trip to the river for trout, and I'm not taking the whole kitchen sink, and definitely not on a trip involving a plane.