Get the newest WFT - E8
Now you'll not misplace the battery grip any longer.
There's a touch screen on the 1DX Mark II, but Canon has, in their incomprehensible wisdom, crippled the functionality of it to mainly allow for handling focusing in live view and video modes.
You can add the WFT-E6x or WFT-E8x to the 1DX Mark II, in order to get WiFi. It already has Gigabit Ethernet via cable built in.