Hello Anna, someone else who feels my pain!! I have never once had anyone mention big calves, and I know what a problem it can be. I cannot wear tall boots of any kind, and I even needed my ski boots specially fit and they still pinch. I have always linked them to my cheerleader days, and all the bouncing up and down on your toes.
I also agree that they are muscular, and not fat. Probably the leanest part of my body actually. Years ago I worked with a guy who was a body builder and he would grab my legs in wonder. He had no idea how I had these calves that he would slave for hours trying to get. Sorry to ramble, but this just seems so unique to me! Do you have similar experiences?
Anyway, having said all that, I will say that one of my favorite parts of PLB is the calf raises. My thinking is that I am going to have these legs no matter what. They have never gotten smaller, but I have never noticed them getting bigger with exercise. I would much prefer them to be defined, and if there is even the slightest bit of fat in that area, I want it gone. I don't want little stove pipes poking out from skirts or capri pants, I want muscle.....no matter how big they are

I would not be afraid to do any of the exercises, personally. I know of no way to make them smaller, and mine have never gone that direction. If anyone can suggest something, I am open to it. I will say that being flexible is important. I stretch a lot, and hope that my muscles are as long as they can be.
Bottom line, I think it is the build we are born with, and you can only alter it so much. Love yourself and know that there are bodybuilders out there who would kill for what you have naturally;-)