Having worn a pair of FiveFinger KSOs as my only shoes for the last year, I was excited to try these out when they showed up at my local REI. I am sorry to say that other than the nice roomy foot box, they really don't feel that much different then a regular shoe. I appreciate that they incorporate the zero-heel drop that many minimalist shoe wearers want in their running shoes, but it still seems a long stretch to say that it is a "barefoot" shoe after wearing FiveFingers for so long.
I can say that peoples concerns about breaking toes is not likely to be a problem. There is sufficient material that if you are a toe-stubber you won't have any more problems than you do now. That being said, I really think that once you move to minimalist shoes and get used to feeling the ground (as our feet are suppose to do) you will find that you don't run into things as often. I have yet to talk to anyone who has broken their toe after going minimalist and that people really should stop listening to all the fear mongers.