Our Yukon seems to take off in 2nd gear from a stop. A little more pressure on the pedal and it jumps down to 1st. I would not say it is a violent lurch but at this point the rpms are up a bit. Seems dumb to just not start in 1st gear and let the mechanical advantage at low rpms do their thing. This is normal mode, not sport.
Also, unless I am missing something, you cannot go into accessory mode and adjust the majority of vehicle settings unless you start the vehicle. That seems pretty dumb to me.