<Truck drivers point of view>
I can only see one problem with a device such as this. While you're paying attention to the screen, who's watching the road?
Traffic, speedo, traffic, tach, traffic, pyrometer, traffic, primary air, traffic, secondary air, traffic, trans temp, traffic, engine temp, traffic, front diff temp, traffic, rear diff temp, etc. With all this going on, can you really afford one more gadget which needs your attention?(Note: I didn't mention cell-phones. Hang up and drive!)
If you are truley uncomfortable with the concept of learning to float or double clutch a non-syncronized transmission, don't buy a truck that has one. There are many quality trucks on the used market with either the Eaton Autoshift or rhe ZF Meritor Freedomline transmissions that you shouldn't feel forced to buy a non-automated trans.