Well, I like decockers but not to the expense of a safety. Most decocker guns are decocker only, with the few obvious exceptions like 92's and USP and so on. For example there is no safety to be seen on a Sig and on a CZ you get choose one or the other.
Now, for MY taste, I would like a cambo, mounted on the frame, with decock being UP and safe being CENTER and READY being down. Hey anyone make one of those? For now my CZ gets manualy decocked for the few times I need to do that, most of the time its chamber is empty or its cocked and locked. On the CZ I know I can decock as safely as any mechanical device. I place my thumb between hammer and pin and depress trigger. When the sear is disengaged I release the trigger and let the hammer go to half cock. This means that even if the firing pin safety gets bypassed by the trigger pull my finger acts like one. Your milage may vary.
Loch