I did not try the cruise control... I'm of the mentality to drive it, and pay attention...
I feel the same way about normal cruise control. But I tried the adaptive cruise control on the way back from a 2.5 hour road trip and fell in love with it. If anything, I feel like it helps me pay MORE attention to to what's happening on the road ahead of me. There's less to think about so I end up just focusing on steering and checking what's going on further down the road. Also, after the road trip, I felt relaxed instead of all tense like I normally feel after a road trip. It also keeps me from speeding too much. I've already gotten one speeding ticket since buying this truck and I haven't even had it for 2 weeks.