you know even the best surgeon may damage your nerve too much. in some part it depends on your body - how much your nerve are prone to damage due to stretching.. or if you do sports, etc etc
paradoxically a novice may not damage your nerve too much (somehow) and the best one may have little less fortune in your case
nerves = gamble.
and also what means permanently nerve damaged. It's never damaged in 100% (if it's not cut)
for some it's less than 90% of normal nerve function
for some less than 99%
for same less than 100.00000000%
it all depends
generally I repeat it many times if anyone problem seems to be mild (not so much bothering) and if that person are very afraid of any nerve damage, I recommend avoid surgery. Mental cosequences for such person may be terrible. Some people may not bother slight feeling distirbuances on face... on some slight or even severe obsession may develop. That condition may be devastating
Obsession - constant worrying about the thing with no relief
Fortunately such reaction is rather rare, especially if a patient after surgery gets what he wants.
It's better to get what you wanted and eventually pay(loss) a little for that (costs - something for something)
than not get what you expected and loose something at the same time - that is a problem