If I remember correctly what a pipe sergeant told me from the Blackwatch when it came through on a tour; the collar dogs are precut in the tunic collar and fixed with a cotter pin once they are put on the collar. I also had made a class one uniform for my job. Most of the tunics you buy now do not have the collar dogs "punched out" so you would probably just use your collar brass as usual. As for the cross belt I had a hole above the buckle to which I put my spare hat shield through and just screwed it in. When all is said and done and you finally get on the pipes, ask your union [if you have one] to purchase a pipe banner for your bass drone check the net or locally to have one made with your job's patch or your municipality's emblem.