Thanks for all the advise and generally for this very useful thread.
1. Will paggid and AP pads accomodate the wear sensor?
2. Assuming that iDrive shows estimated remaining life of brake pads (in km or miles) based on some sort of an algorythm, will the (gu)estimate be "correct" if the pads are changed to anything other than OEM (which have different coefficient of friction)?
Apologies for these being off topic as far as this DIY is concerned.