Getting a bike with an uncomfortable seat is a horrible idea. You may have a bit of fun with it outdoors but it will come back to bite you in the butt unless you change the seat. The Infinity Seat is a cool saddle for touring, mountain, and road bikes. It is designed to minimize contact pressure and redistribute body weight to make riders more comfortable.
The Infinity Seat is light and should work for most people. Like the idea? Support it on Kickstarter.