Update on LYS. They have recently added a Fast Track lane at T2, but there are not yet any Skypriority signs, nor did my Economy BP (FB Plat) work when I scanned it. But my Privilys of course worked.
I am guessing this new gate at security must be either for Skypriority in the future, or perhaps it is only for EK premium passengers. I don't mind a few EK pax, but it would be kind of bad news for us Privilys members if any ST elites could access our line!