Clicklock permanent roofing

This was a new one for me today, saw a sign for a roof being installed, clicklock permanent roofing, I think the word permanent caught my eye. I’ve never heard of it before, so had a look online.clicklock

Anybody know of this, have any opinions?

A friend of mine is a roofer and loves it. They call it permanant due to it lasting between 50-60 years. There are a bunch of different profiles. I gave him a hand one afternoon installing it and when it goes together it is water tight.