I have seen the square pans but I haven't seen in pictures of them being used. They look very interesting.. Have anyone tried them?
I've made cupcakes (the scorpion cupcakes in my pictures) with that pan. The squareness of the cakes aren't really very noticeable, unfortunately.
I have made the square cupcake pan and mine do show up as square. I've found you can use regular round liners and they conform to the square shape.
I've also found that for some reason people reach for the SQUARE cupcake instead if the round same exact cupcake. WACKY! Maybe it's bcuz they seem a little bigger?
I love mine, but I mostly use it for muffins.
Here are some pictures I found: