When I get on my motorcycle I like to ride and not worry about the geeky stuff.
In fact I don't want to have the time to think about anything but keeping my focus on my environment around me.
That said, when I do go on extended trips, the laptop, the ipod, the creative mp3 and the DSLR all go in the top-box.
But that definitely means no distractions whatsoever while riding.
I understand the pain that it is to take cloves off to check mobile phone, but that is the way it is on a motorcycle, it usually means it's a good time for a break and check out the scenery.
If you must make a call while riding, then pair up your phone to your bluetooth GPS or helmut approved head-set and configure it to respond to voice commands.
On the road, I personally wouldn't want to see you coming toward me and seeing you fiddling with buttons!
Ah, motorcycling, mmmmm, just back from a long ride through the French Alps with tent, wine et fromage et baguette, mmmmm, going back in June for another 10k summer trip 
Paul