I bought these pans specifically to use in the microwave to make layer cakes. I didn't use the pans in a conventional oven, but they worked fabulously in the microwave. Easy clean-up, and, as long as you spray it with some cooking spray before each use, AND wait for the cake to cool completely, the cake released from the pan nicely.
My only complaint: The sides of the pans are slanted. I was expecting pans with sides that are straight up and down so when you make a two-layer cake, the cake is perfectly straight on the sides. If this company were to make a straight-sided round cake pan (for microwave use), I would buy it in a minute.