Worth it? No, not in terms of value for money. Build quality of a cheap supermarket shoe, and poor weather protection. But they do work, if you want the stickiest shoe out there that’s 5 10.
Personally, I use Shimano and Vans, since any half-decent flat shoe has more grip than you need, so I went with the Shimanos for the superior build quality and wet weather manners (my older pair of AM40s has lasted more than twice as long as my Five Tens did, and are still going strong)
My Vans were just cheap 😉 But they do the job almost as well.
My grippiest pedals needed some pins taken out to get the grip level right… So not sure why the super-sticky rubber is seen as a selling point really. If you have good footwork you don’t need it, if you have bad footwork no amount of sticky will keep your feet on, surely?