See, that is why I like what Idaho Rob is doing with their LML. He is leaving the DPF on the truck, so he can fuel hard down low (off boost) to get off the line and onto boost quickly, and not leave any smoke behind the truck. It will just regen more often if you hammer it off the line all the time, but with the rest of the tuning changes, it actually decreased regen frequency for normal mixed driving!
I can say this: if you want a good towing experience with minimal smoke, don't do my build! 72mm fixed geometry turbo, big cam, lowered compression, and 35" tires means I either black out an intersection (not cool) or take forever to get on boost. I ended up dialing the tune to leave a puff and some haze if I go WOT. Lets me choose somewhere between crystal clear and dog slow, or "stock Cummins" levels of smoke and ...less slow (but still laggy), based on how much skinny pedal I use.
Jason, I think limiting the fuel down low is more about smoke than rods, but you are right, big fueling at low RPM once the turbo comes up will give you a nice set of banana rods.