^ I'd agree with most of that. Re Chris, I've swapped messages with him about it and essentially he likes the rack - mainly on aero grounds vs standard racks - but not the bag.
The other thing that I would want to know more about before buying a Tailfin is the failure that was reported on GBDuro this summer. It was a long, off-road event so pretty demanding, but they do market it as being up to off-road use.
It's the only one I'd heard of. One failure doesn't make it a bad product, but I would just want to know more about how and why this one failed, and how the rider was able to fix it. There might be an account up somewhere but I've not seen it. What I would not want to hear is 'responded straight away, offered me a replacement, great service, etc.'
Edit, just did a quick search and found this:
https://dotwatcher.cc/race/gbduro20?reverse=trueLooks like it was carrying panniers, so more weight than a rack pack, and in a different place. And the rider, Gail Brown, was able to tape it together and finish in third place. Reasonably reassuring.