The SNES one in my magizine of Nintendo Power works to play as a regular controller though. dmaster will have to take pics to proove that it is true. I can get the full article and type it up but I can't do the pics though.

EDIT Here is the article:
Title of article: A Firm Grasp
Subtitle: Attack of the giant SNES Controller
Good luck trying to get a grip on this bad boy. Inspired by an
Australian fellow who built a giant, NES-controller coffee table, (SD you are right sorry)Super NES enthusiast and woodcrafter Matt Laboone set out to create it's upgraded counterpart. "I am a huge SNES fan," writes Laboone in a blog post explaining the project. "It's what I was raised on, so even though the curves make it a difficult controller to shape, I decided to give it a try."
It took him the bulk of a summer and a lot of hard work to accomplish his mission, but the results are simply outstanding. Measuring a little more than 3 feet wide, this larger-than-life Super NES controller is fully wired to deliver intense retro gaming action. Though the Controll Pad and buttons are designed to be a confortable arm's lenght apart. It's hard to imagine playing Super Mario World without a friend lending a hand. To help you fly and jump in the games also so yo will need help when playing with this huge controller.XD
-NATHAN M.
This is the exact article. If it should not be here mods please PM me incase it is foreging. I don't know that it is so please let me know and I will delete the article. I just want the members to see it. That's all.