Had the upgrade as I bought a new Asus in June...my pc man kept me on the old driver with W7 until 10 became available - thereby avoiding exposure to 8.
Had it done yesterday, the installment of the new driver, file transfer and 10 installation. In keyboard, it's brilliant, the speed of reaction far improved and little discernible change - my issue being, and needing some coaching, how to go into tablet mode, not that this really matters. I appreciate the speed and may see if this Cantona function works or whatever they call it......