Sausage tends to be treated in a variety of ways. You do see places with coin shaped sausage (like pepperoni), but shaved pieces are popular as well, along with crumbles. Not only does the sausage treatment differ from place to place, but you'll have different treatment between the workers. I ordered a sausage pie from a local place a month ago and got substantial clumps of crumbled sausage (good), but a few weeks later I got shaved links (bad).
It really depends on the thickness of the coins and how they arrange them, but, generally speaking, shaving gives you the least meat, which is good for penny pinching bottom line watching owners, but really crappy for the customer. Large crumbles/mounds are the best, both from a perspective of fairness to the customer and taste. Aesthetically, the large clumps look better as well.