It's not stupid as wearing the Euro/Down Under brands which aren't USCG approved, and accepted only at Laser events where the water is waist deep)
had one of those, it was nice, the back got nicked on a shroud on a Santana 20, and started to rip really bad
replaced it with a Lotus Sherman, and I like it a lot better
Our number 1 selling PFD is the Extra-Sport Stiletto for both juniors and adults. But a lot of the top Laser sailors are buying the Gill and Gul euro jackets with the caveat they are not USCG approved...
I just picked up the Gill buoyancy aid this year and couldn't be happier. Definitely enough flotation and super thin.