Originally Posted by kevinsubaru
Don't put the horse before the cart...
Put the clipless on your road bike to see how you get along with them. Then, when you are comfortable, put them on your fixie as well.
Have fun,
Kevin
+1
and on a side note, make sure that the cleats are in good shape before you try to do any sudden stops on the fixie. One thing that can happen with clipless is cliping out unintentionally because the cleat is worn down, and it can ruin your whole day quickly, cause when it happens, you're usually not prepared. It happened to me while going down Lombard in San Francisco... lucky for me I had enough time to steer into a wall for a "controlled" crash. other than that, I personally think clipless are much easier to use than toeclips. the cliping in/out action never changes, no straps to adjust...
on the other hand toe clips are great if you don't feel like wearing special shoes.