If you couldn't let out the real you once in a while it wasn't a good thing since all that tended to eventually build up inside and make you miserable. Maybe that was why when Joe sent MacLeod his way Methos hadn't run for the first time in a long time.
"Make them all British and you get a good picture of what I had all around me. Brits are very pompous and have no taste in food." And of course he knew that since he was currently using a British accent he was sounding even more pompous probably.