I'm speaking based on my experience and therefore comparison with the first bikila's version which is my current training shoe. Before trying VFF I run on minimalist shoes for about 2 years. I guess that prepared my feet for the VFF experience. I would say that running on minimalist shoes changed my feet in a way that they spread better now and probably they grew half a size. I ordered the original bikilas from eBay and I've been training on them for about 2 months and I love them. Since then, I noticed I just can't go back to wearing my other minimalist shoes, probably the merrell pace glove are my only alternative since they're similar in terms of being really minimalist and therefore compatible with my running style and with the way my feet need to spread and accommodate when running forefoot. So, since I realized I can only run effectively barefoot on VFFs I ordered the new bikila Evo. I really wanted to like them. However I think they're too narrow for my feet, comparing term with the first bikila model. I didn't try ordering a bigger size because I know the problem is not the length but the width and I also read a comment coming from a person that had the same issue and the next size didn't work as well. Some people also mention the defective pinky toe fit and I cannot agree more. It just felt out of place and I can imagine it could be  really painful during my long runs. If you're wearing minimalist or VFF for the first time, probably you won't have a proble since your feet have not gone through any kind of adaptation. Good luck!