Good point. A few of the Lotus guys running CL pads have had them stick to the disc after running the cars in the wet. This did result in the friction material breaking away from the backing plate. As I understand a particular batch that suffered complete failure and it does not occur on other batches, but the pads will still stick like you wouldn't believe.
Also worth bearing in mind that sintered pads do not look anything like organic when worn. The edges will be jagged and the pad material will look like it's falling apart.
