I have had the CZ custom shop work on both of my CZs. The SP01 has had a trigger job as well as the competition trigger/hammer option and spring set. The gun is a great shooter and reliable.
The same thing was done with my CZ97B. The trigger was much too light when I got it back and would scare the crap out of you when it was a little cold out. You really could not feel the hard spot before the trigger would break the shot.
I took it back to the shop and had them put stiffer springs in. The gun is still very light and has absolutely no positive movement in the hammer before it breaks whereas the SP01 has just enough to be visible.
I like both guns but I would not carry either of them as a CCW. They are both too light in the trigger.