Oh, I didn't see the half cylinder one. Having made a few soaps in cups, I have to say that shape fits very nicely in the hand. I like it! I got a couple of spheres but not from BB. Haven't used them yet. I got a couple of their one pound, 3-4 bar loaf molds and am itching to try them. That was a good sale.
Better be posting pictures of your new soap, which I bet you'll be making in the next day or two!