One of my favorite things about the Magnum gearing is that I can run 2nd gear on the trail and lock up the converter. Keeps trans temps much cooler.
Depending on which trans you have, you can set up the torque converter clutch (TCC) on a manual switch so you can lock it in whenever you'd like. When I had a 700r4 trans, that's how I would run the TCC. The 4l80e with a stand alone controller allows me to program the TCC how I want it to behave so the manual switch isn't needed.