Actually, Jeff tested
ferodo sintered pads on his BrakeTech rotors
which have cryo treatment. So, if you have a set of 4 or 5 year old "Superlight" rotors, you'd need to send them to Jeff to be cryo treated before using the Sintergrip pads.
Further, there are such things as "kit" sintered pads. These can be obtained from EBC (not to be confused with EBC HH) and are OEM on some bikes like certain year GSXR 750.
Please do not ever use these on any iron rotors. Kit pads are so aggressive that they quickly wear even the more durable stainless rotors in as little as a few races.
Hence, it's always best to use organic pads on iron rotors. Ductile iron rotors have especially great feel and are coupled with awesome power. No need for sintered pads, imho.

Chris