Trust does go along way when it comes to shop services. Once a local gains that trust it can be very convenient, faster, as well as cheaper (no to and from shipping).
I have a local guy that does all my boring. Hell he will hone it for free inbetween ring changes.
If you need port work or other specialty shop services it makes sense to have them do the boring as well if they can. It's just less hassle that way since your shipping it out any ways.