I'm betting with the amount of hair you have, no is going to tell you have a scar in the back. Not even the hair dressers. You normally have to look for the scars by lifting up the hairs. No need to fret about the scar unless you plan to shave it down to a #2 or less.
It is not the scar but the recipient area- I need to explain to them that it still needs hiding and not to cut the fringe too short. I have spoken to a guy who used to cut my hair and explained the situ. He was great, asked me how it was healing; he said that I could come right at the end of the day as his last customer and told me it would be 'our little secret' and no one else in the salon would know. (bet he got off the phone and told everyone)
Lol...........maybe he told everyone. You'll be able to tell when all eyes go to your hairline when you walk in the door. People in the hair salon business are facinated by the ht procedure and want to know all about it. You may just want to pass on Dr. Feriduni's contact details. I'm sure your stylist is anxious to see for himself the progress so far.