Not to high-jack the thread, but this brings up a similar question.
Can the later 3rd gens, specifically a 4513TSW be converted (or perverted, depending on your opinion) so the safety / de-cocker can operate as a safety in the single action mode?
Giving you 4 modes of readiness.
1) single action, safety off.
2) single action, safety on.
3) double action, safety off.
4) double action, safety on.
The H&K and Taurus guns operate this way and still have a functional de-cocker.
The 4513TSW has modes 1, 3, and 4 above.