You don't need to take your shoes off to take advantage of barefoot running techniques. I've been working on a shorter stride, faster cadence (number of steps) and mid foot (rather than heel) strike for a little while now.
Apart from a few runs on the beach I've not taken the plunge and gone barefoot though. I'm thinking about giving it a go though, just once a week maybe to see how I get on.
I'll post up my experiences as I go.
In the mean time , in case you are the only person not to have read Born to Run yet (you should, its a great read - even if you have NO interest in running - seriously) here is a link to Prof Daniel Lieberman talking about barefoot. Its not new, but it is pretty cool so if you haven't seen it yet I reckon you should take a look:
Click here for the vid