I totally agree this transmission is fantastic, and I mentioned how I'm shocked how well the truck moves in 8/9/10 gears -- I thought those would be dogs and terrible for torque but the truck does fantastic with them. I think normal mode is very smooth and the gear shifting is good. I like how sport hits every gear, I like the crispness of it and how responsive everything is for such a heavy truck...BUT the gear holding sucks.
Yes, I get why they did the sport gear holding (3rd and 4th gear only AFAIK) for when you have continuous open roads and corner after corner you want to stay in the high rev range, but it's terribly implemented. First of all, it only comes on sometimes, depending on throttle on takeoff, initially speed, and also what speed you let up. If you stay on the gas until about 70mph then it's past 4th and doesn't gear hold, but usually strong acceleration until say 45mph-50mph and you're stuck revvvvvvvvvvvvvvving for like 10 seconds. Toggling to normal at this point is ridicluously cumbersome. I am OK with baja mode doing this, but sport mode, which is used on the street, is way more times than not, not going to take advantage of keeping 3rd or 4th at 5k rpm forever. Furthermore, this is a turbo engine that makes peak torque much lower in the rev band so it doesn't need to stay that high. For a frame of reference, my Ferrari cruises at 4k+ RPM and revs to 8,500, so I'm familiar and used to high RPM usage. It's just not right in this truck the way it holds.
On another note, I love the idea of the paddles and think they are implemented well, but using them gets old really fast due to the shear number of gears. It's a constant game of changing gears so unless you are really in the mood and have the right occasion, it's pretty tiresome.