Cyclelops, I am confused as I'm not quite sure what you mean that there is a break in period for AFO's. And that they are very painful. I realize there are many kinds of peripheral neuropathy. I have Charcot-Marie-Tooth disease (CMT for short). Perhaps you have heard of it. It is the most common "inherited" neurological disorder and is found worldwide. There are a number of types of it and sub types as well that they now have found. It is slowly progressive and causes deterioration of the peripheral nerves which control sensory information and muscle function of the foot/lower leg and the hand/forearm. And, of course there is much more.
At any rate, there is footdrop and lots of other things which do require at some point AFO's. I'm not quite there yet. However, from everything I have heard from people who have this and who wear AFO's, there should not be any pain. There would be adjustments that would have to be made to the AFO's. A person with CMT needs a brace person who understands CMT and how it affects the feet/legs.
Again, I do understand that there are many, many types of PN. I just wanted to bring this forth. There is, of course, much more information concerning CMT. I do appreciate your post and find it full of information. Thank you.
Kitt