Here is a vid that shows the KB/M setup, and some of the key combos are a big nope, like Tab+F, lol.
Edit: For KB/M all the key functions are remappable. I don't know if it will allow combos like Shift+1, or 1, 2, 3, etc. If it does, I'd certainly be placing Tab+F as Shift+F or a number key...