Back on topic. I'm converting my road bike to a fixed gear, and my roommate is building a pursuit bike, and several of our friends are fixie freaks.

We've concluded that it takes a while to adapt to fixed gear and get truly comfortable with it, and during this time it is probally a good idea.

Once you're comfortable, go clipless. As was said whatever you feel comfortable with. Personally I feel comfortable with toe clips, especially since I found some old school specialized cycling shoes with the stiff soles for maximum power output *roars*