I've been on the GP5000 TL in 28's all season. I think road tubeless has finally worked out all the bugs and is worth trying for everybody. Especially if you have disc brakes and flats are a pain the ass. I was an early adopter to some schwable pro in a fwe years ago and didn't have great luck.
The Aerocoach guys call the GP5000TL "flat proof" based on their most recent aero paper. According to them, the choice now is fast tires (vittoria corsa speed) or bomb proof tires (gp5000). Funny thing is you're only giving up a couple of watts to the GP5000 or the Turbo Tubeless. I'll take the peace of mind on anything but my TT bike.