I'm not quite ready to try VFFs (yet! ), but I did run a lap today in my new training flats, just to start getting used to them. It was quickly apparent that my left foot still heel strikes ever so slightly (but not like it used to!). I could actually hear it in my cadence- pretty darn cool IMO. I hadn't noticed it previously in my normal running shoes.

I think switching to less structured shoes will pay off in the long run, but I'm being really cautious with it for now.