I'm sorry to see you haven't received any responses as of yet.
I too am awaiting the spinal cord stimulator for my bilateral leg peripheral neuropathy. I must embarrassingly confess I've never heard of the peripheral nerve stimulator you are talking about. Can you explain what the difference is between that and the SCS that you are asking about?
I'd like to be of more help, as getting these procedures done is a BIG deal!
In the meantime, let me recommend (if you haven't already), check out the RSD section. They have several wonderful folks there who have the SCS. Also a few on the Spinal Disorder Forum. Just punch in "spinal cord stimulator" or "SCS" on the search button.
Let me know how you and your husband are doing.
Please feel free to send me a private message Re: the information on the PN stim your husband has tried.

Truly Caring
Rae