Yup, this movement definitely has a stop. What I wouldn't suggest doing is winding the crown backwards. Modern watches that I've had have a mechanism that simply disengages the winding wheel thing from the keyless when you go backwards, so it's free to move but it does nothing.
On this watch however...I went slowly backwards, just to see how it felt, and I could feel a ratchet, so I think that would definitely be worn if you were the type of person who winds the watch without letting go of the crown (i.e. wind forwards, wind back, wind forwards, wind back without letting go). For me, it's always wind forwards, let go, wind forwards, let go, etc.
For some of the older watches, your Dad is right; I've handled an Omega from the 60s that for whatever reason didn't have a hard stop...so I gave it about 15-20 'winds' and then didn't touch it again. But I don't know enough about vintage movements to say what had happened (i.e. if this was designed or if it was a flaw of this particular watch).
I have a question for you. If you press the Chronograph start button (the one at 2) very slowly, can you feel TWO clicks? One click is when the chrono starts, and then there's a second click further down that does nothing?
I read on WUS that the recommendation from Ed (the supplier guy in HK) was that you simply press the chrono buttons firmly....don't do it slowly. But I did it slowly anyway to watch the mechanism, and I could feel two bumps. Can you? I hope I'm not alone...