Maybe just me, ...lol!!! The thing is that i'm seeing many times on UK forums the acceptance of gimmick idea's on conventional systems that are not upto scratch, but because there quicker to install requires minimal to no skill, there suddenly better than the conventional system.
In this case, the standard galv threaded conduit system, that's been around longer than me or any other forum member. My point is that i've had main contractors pass me more than a few samples at various times for approval to be used on my projects. None of those push-fit or set screw conduit systems were worth a light, the connections, be they couplings or boxes were at best sloppy fits, they were certainly not rigid or anywhere near conforming to IP 67!!! There may well be yet another system that's recently hit the market, ....until i see the blurb, and physically put 2 bits of conduit together without it wobbling around, then i'll be sticking to my own experience of these conduit systems.