The Mickey & Peter look real good. The Davy I got in person has less of a swoop in the D and J and the J didnt cross over the end of Jones like here. Im not saying he never signed like this, but mine is not quite the same. Perhaps others who have gotten Davy to sign this way can verify this signature better.
It looked unusual to me too, but there are other examples like this. Here's one that was authenticated by JSA, along with a nice Peter signature. Davy varied his signature quite a bit.