I went with the double sided pedas and just took it slow learning to use them. I didn't ride in traffic until I felt relatively secure in my ability to get out of them. Your LBS should let you try them out on a trainer to get somewhat used to the feel of them. Having said that, my LBS also toosed me a set of removeable platforme to put on my SPDs in case I want to use regular shoes or let someone else ride my bike.

Cheers,

Brian