Well, for the folks interested, I have in fact confirmed that using the SVT Focus caliper bracket and rotor with the existing E1 (or regular) contour caliper body and pads is feasible. It will still require the same shim as you would if you were using the entire SVT Focus caliper though.
Couple of notes, I did not verify the shim size necessary, as I didn't have the time to fool w/ it. When using the regular contour caliper w/ the SVTF bracket, you will not make use of all of the available swept area of the rotor, but because the area not used is to the inside of the rotor, it should not make a significant difference in braking ability. While I didn't have an E0 caliper to check also, I suspect it will fit just the same, though it will use a bit more of the rotor area (just like the difference w/ the Eo and E1 calipers on the 278mm rotor)
And lastly, I do not even know if the caliper brackets are available seperately, I borrowed a complete SVTF caliper from a friend and disassembled it for this trial.
Oh, and the retention spring on the end, you can use the regular contour one, it looks identical to the focus one.