Originally Posted by
CrimsonEclipse
I'll stick with brazed or welded.
Also, note:
I've had folding latches and "sail safes" fail while on a ride.
I agree.
I went looking for how the couplers attach to frame tubes, found this article, doesn't say, but (circa 2022) a bunch of new coupler systems on the market, this article covers 5 of them:
https://www.bicycling.com/bikes-gear...bike-couplers/