Joining the MFi controller party is the UK-based accessory manufacture Big Ben Interactive. They had two controllers to demo, although we weren't able to get working units to try. Still, we get a brief little hands-on with them so you can get an idea of what they're like. The pull apart one seems cool, and the other one feels a lot like a small PlayStation controller:
We're working on getting more information from Big Ben on launch specifics of these devices in the US market.