Based on what calculations?
I AM OKW user too. I found that IF I LOSE MY TRUCK, IT DOESN'T HURT. it's cheap so you can get benefit from forward trucks even if you lose that truck. you can just produce another truck and setup again your real base after truck loss. I don't mind losing my truck anymore. i can re-produce that cheap truck easiliy.
it offers forward reinforcement point, producing ability and medic with cheap cost.
I think the loss of enemy is almost always bigger than my truck loss after the battle around that truck.