Yeah I see a variety of forms. Usually sticks which I prefer also but also "two stick"ish and "four stick"ish slabs. I also see logs of rolled butter, which are about three sticks worth or so rolled into a cylinder. I also see square slabs, maybe the mass of a stick or so, and sometimes tubs. The tubs are convenient for spreading but not as much for baking.

I usually prefer the sticks, as you don't have to cut the larger slabs.