I have a 1 set of 09 down XB standard length, 1 set of 1125 standard length and 1 set of 09 down XB shorty "Blems" (I'll discount them). The ball on the end of the lever has some scuffs, you would have to look closely.
The 09/10 XB bikes (model escapes me) came with a 8 piston front caliper. The late model XB sets consist of an early XB clutch perch and a 1125 brake perch. I was mix and matching the sets originally and now I order them this way.