Does the dual sided pei plate use the PEI stickers one can buy as replacement? I have bought one of the stickers and put it on the cool plate. The experience was quite disappointing. At the second print, some bubbles formed, e.g. the sticker detached locally.
Instead I bought a double sided smooth PEI plate from Energetic at AliExpress which is just 5 bucks more for the entire plate shipped than a single sticker from Bambu. It is coated instead of glued on.
I had no issues so far also with PC (not Bambu but Polymaker PolyMax PC) without any treatment. It is a bit more sticky than the Bambu smooth PEI but no damage yet.
Just had to deburr the slightly rough edges and stick a QR code on for automatic recognition.