First, it would NOT be easy to get an 85 that way -- because CZ won't sell the frame or the slide separately, and its no longer making the 85 Compact in .40.
The 75B Compact in .40 has those features, but isn't -- at least at present -- available in 9mm.
Secondly, the frame of the .40 Compact is STEEL, not alloy, negating some of the advantage of the P-01. It is a much heavier gun (Especially when you look at the more massive dustcover area, in steel.)
Finally, its not a decocker version, and the P-01 is.
They look similar, but they aren't.
CZ has a large array of models, but continues to NOT make available a couple of the combos people want.