I don't want to beat a dead horse, because it's only fun for a few seconds. You end up feeling sort of hollow...
At any rate, I would like to share a few insights on this whole mess. I don't carry my 97B, so maybe I am a bit of a hypocrite, but I have carried a 75 and 75 Compact.
I have always taken the view that a handgun that is readied (Condition 1 or 2) is readied. In other words, if I don't screw with it, there is no earthly reason that it could have become un-ready, assuming it never left my possession. In the case of the CZ 97B, the pistol even has a loaded chamber indicator.
In other words, how many times a week do I really need to monkey with the pistol? Seriously, I do not intend offense. However, some people that spend all this energy worrying about manually decocking a pistol should probably just try it. It's not like you have to decock the pistol dozens of times a day, just asking for trouble...
Decocking is a basic gunhandling skill. If you think that it is esoteric or foolhardy, then you have no business ever handling any revolver, much less an SA revolver. If that sounds harsh, think about it. Someone is basically telling me that decocking a live weapon is inherently dangerous and shouldn't be attempted. In that case, they are arguing that a cocked revolver (which in all but a few cases cannot be rendered safe, as the cylinder will not move) is safer than lowering the hammer by hand. That is ridiculous.
Of course, some may say that we are talking of semi-autos. By and large, manually decocking a semi-auto is much safer than with a revolver, as they have more safety features. The only exceptions to this rule are a few isolated models manufactured before WWII.
In contrast, decockers are mechanical devices, and some are better designed than others. When a decocker fails, which is unlikely with some designs I admit, nothing good can happen. Some pistols will fire. Most will not, but the pistol is rendered inoperable. Depending on the situation, choose your poison.
Short explanation: A decocking lever does something that I can do for myself and ought to be able to do, i.e. decock my own pistol. A manual Browning-type safety does something that I cannot do for myself, i.e. render the pistol safe with a cocked hammer.