I type 120-130WPM. Why would I want to use this on a PC? I am not being a jerk, I am seriously asking.
I am using it on a PC when I'm feeling lazy and don't want to set two hands on the keyboard to type...like what I am doing right now. I definitely don't type as fast as I would with two hands on a regular keyboard, but it's just really fun and feel magical to type this way and I could layback in my chair and put my hand anywhere. I also find it really convenient to not have to move my right hand between the keyboard and the mouse, since my left hand is all that's needed to type.