I run mine in tow alot. Has a better shift point. IMO. You can run in "tow" or "OD off" as much as you want without a problem. In fact, not shifting as much will keep your tranny temp down.

 

My 08 2500 Hemi actually gets better MPG in town with the tow/haul engaged. Unless I'm out on the interstate or have a clear flat highway in front of me, I run mine in T/H all the time. Maybe I have it all wrong here but isn't that what a programer does?...increase your shift points?