FWIW, this probably belongs in "around the campfire".

Regarding the takedown issue, I wouldn't worry much about it. For one, it would be a pretty hard trick to pull off "for real".

Also, if you think about it, most firearms have weaknesses when you are physically close enought to grapple.

For example, if you push back on the slide of many autos and then grasp the "nose" of the gun, holding the slide in a pushed back position, the slide is in the way of the hammer. This is probably much easier to do and isn't specific to just one model firearm.

There is also the case of grasping the cylinder of a revolver tightly.

This isn't really an issue with the 92FS. It is an issue that you are too close. :-)

-john