Very, very good question ! Thx for that. I had the same lookup and additionally landet here during my research...
So pls, Piriform, where did you get these drivers from?
Can´t validate if they are safe, clean and true (until now) !!!
I understand the need for discretion to that download source, cause this is how you make the money with, right?
But I wont even use/ buy a tool, wich makes me feel uncomfortable with an installation of drivers, so....