I have limited experience with it, but here is what I can tell you.
The experience that I do have is in cop cars. I don't know too much about them, but I do know they have the waterproof/resistant keyboard, back lit keyboard, and touch screen.
Likes: They are durable as hell. Think about getting jostled around in a car 12-16 hours a day. Its rough. They get tapped on the screen all day long, and there is no visible damage, but lots of smudges
Dislikes: They are heavy, kinda surprised me when I first picked on up. Second, the keyboard, because of its water resistantness, is very hard to type on. Takes a bit of getting used to. Last, maybe it is just the settings they all have them on, but the touchpad is uber NOT sensitive. I swear it takes a dozen strokes to get half way across the screen.