I've been holding off from getting a iPod Touch because I find the click wheel so useful. I tend to change the volume, pause or jump to the next track using the click wheel while it's inside my pocket and obviously you can't navigate the Touch 'blind'.
I've not had a click wheel iPod in the first place (I've used one, though) but I plan on getting a Gear4Blueye to go with my iPod Touch when I finally get an iPod Touch.
It has an Apple Remote-like interface on it so I can control my iPod "blind", so to speak. Can't wait to get bothGonna be so sweet.