I wouldn't worry about that at all. Get a spare PCM, if you take the truck in change out the PCM before it goes for work. It's almost impossible for the average tech to find that you had a different PCM in the truck. I worried about some of those statements in the beginning of my search.I know i goin sound like a old man here but with a new truck watch what you do to void any warrentys unless you just dont give a shit bout that like me haha. but just thought i would threw that out there its always nice for someone else to pay when you brake it.
Ask anybody who has a custom tune what they think. I'm 99.99% sure the answer will be worth that small risk.