So I've had mine for a few weeks now, and I can still count the number of times I've used the physical keyboard on one hand lol. I'm not even sure why. It's fine when I use it, but the onscreen one is just -so- fast and responsive. I can type much much faster with the onscreen one.
On the flip side I like that it's there just in case I need it for some reason (needing to type something really specific, etc).
But yeah, how much do you use it?