This was a really great review and comparison. I Just liked and subscribed. I noticed you haven't made a video in a while. That's a shame, because you do an excellent job.
Spot on man, we found a bunch of the EXACT same things when reviewing Flite and drawing some comparisons with Pro-Flite and other ring flights. Pro Flite is just straight-up ugly, the instruction for Flite was disappointing, etc. That said, the ability to use Flite for a visual link is a pretty big advantage if you're into that sort of thing. Awesome review, please keep it up!
I have had Pro Flight and found the loading fiddly, also hooking the leather piece over my pocket, it can fall out. But it is worth it for the teaching etc. I am tempted for flight as an everyday carry. I use Propdog reeled flight for my paid gigs.
In my experience, Pro Flite was NOT durable. The instructions? Amazing. Nick Einhorn? One of my favorites period. The routine included in Pro-Flite? Outstanding! But I have to say as an honest the gimmick eventually did ware out and it can't be used as your key-chain.
I find it hard to believe that the spectators wouldn’t want to examine the keychain. Everytime there is a linking effect, laymen would suspect that there is a “gap”. This is a very logical assumption after all. Not to mention that everyone knows the secret behind the Chinese linking rings, laymen or not.