I believe Tesla will sell the initial batch of trucks, with crazy futuristic styling, while improving their production scale at a high premium to the early adopters. Once they have the factories/scale setup, they will just re-skin them with a non-futuristic/conventional body and be able to mass produce (at Tesla levels) the trucks to the wider audience that F-150 owners would buy. And at a more reasonable price as well since they early adopters would have already paid the ramp-up cost. This is similar to the first launch of the high performance Tesla series and makes sense overall.
I personally would love to have an electric F-150 for the reliability that they could have with the years of experience Ford has had in the market. Job site users would be all over this.