They will be covered under warranty, of course not including abuse and negligence.
Pads are 5x more expensive like some mentioned.
Most people I know with CCB's bought them because they're loaded and an extra $8-10k for brakes isn't a big deal for them. CCB's are best used on a track during high load conditions, they have to heat up in order to get the best performance out of them. If you don't heat them up, they squeak like CRAZY (my buddy's SLR is the most annoying car on the road when he drives it cold CCBs and another friends brand new 997.2 Turbo with PCCBs is squeaking all the time too. He has no idea why he bought them, he claims the "calipers looked nice").
For non-track race a BBK or regular M brakes are more than enough. CCB's are totally unnecessary on the street IMO.
SIDE NOTE: Lieutenant Colonel, 1500 posts. NICE!!!
'12 CLS550 Palladium Silver - loaded
'11 E92 M3 ZCP - SG/B-EXT/CF, M-DCT, loaded
'11 E93 328i, BSM over Saddle Brown, sport, loaded
'08 550i M-Sport, Carbon Black (Gone but not forgotten), '06 W211 E55 AMG (Gone, miss this animal),'01 E39 540i Sport