> RWD on an electric truck, lol. What a joke.

My ignorance is going to shine through here, but isn't the rear axle the one you'd want driven if you had to choose?

Sure, both is "better" but if I need cheap, rear is the better choice?

Depends. rear wheel drives can get stuck on pavement if it is raining and they are trying to go uphill. Snow and ice make it worse. But put some load on and you get enough weight over the axel to be fine. Of course betteries may be under the bed thus providing good weight distribution.