Yes, if you get D:OS before the EE is released you'll get the EE automatically added to your Steam or GOG library. There aren't any pre-orders for the PC version, AFAIK.
Thanks, in that case you'll be pleased to hear you made a sale.
As for the controller + PC thing, the game allows you to connect 2 games running on the same PC via LAN, and one can use the keyboard while the other uses the controller.
However the input won't be sent to the game that isn't in focus. Any way to solve that?
If not, I guess I'll have to wait till you guys fix the UI clash.