I'm looking very much forward to seeing the order levels for each model. I suspect the truck will do a lot better, since there is no other truck out there until Tesla launches theirs. Even then, I think it will be a different truck and the market should support both quite well.
SUV are popular, though, and though one is pretty differentiated from everyone else's. I'm quite liking it. As you say, the price per kWh is going to be pretty key.
Though it's said the truck comes in 2020 and the SUV in 2021, the actual time difference could be very short. Think late 2020, early-to-mid 2021. At least, that's what I understand the plan to be right now. Execution is always the hardest part, though they seemed to have handled the engineering and building of these few vehicles quite well.