I want to get a double leg kickstand myself. There is nothing to really lean my bike against at work - we used to all lean them against a wall leading in the kitchen break room, but after a lot of tire scuffs and whatnot the powers that be repainted that area, then we put bikes in the kitchen using a rack...some genius still managed to scuff a freshly painted wall - so now we have to put them in a storage closet. Well, my new bike doesn't fit the (cheap-ish) bike rack very well...if I back it in the fender gets in the way, and if I go front in, I have to be careful the wheel isn't resting on the spokes. So far, I have been the only one there (the other guy who commutes has been out of the the office a lot lately on various trips and meetings) so I haven't had to squeeze it in with his bike yet (though I know it is a tight fit with my rack and panniers and his super wide handlebars based on my old commuter). The single leg kickstand is definitely a bit too wobbly for comfort.
My bike also has a kickstand plate....and it is a dedicated commuter/touring rig. May as well enjoy all the amenities.
Three of my bikes have a kickstand. This one, my Schwinn Suburban (that thing is built in..there is no taking it off), and my Univega mtb - I have debated taking the kickstand off of that one, but it comes in handy if I leave it at my wife's office overnight. I don't think her employers would be as sympathetic to scuff marks as mine have been until recently.
My other 5 bikes (hopefully soon to be 4) do not have one