I would have said this was personal preference of the person playing it.
Thing is, as far as electrics go, I prefer one Vol pot right beneath where I pick so I can control the volume easily No tone control cos I never use it. In that scenario, having a push/pull pot would be ideal, but its not for everyone. I cant say I really like them myself, and I prefer a latching button or switch of some kind away from the Vol Pot, more toward the neck away from the picking area.
Like I said, thats me, and I guess that a lot of you disagree, which is why I said personal preference (see what I did there? Clever wasnt it!)
In fact thinking about it, why not look into lacthing buttons? you could get a chrome arcade machine style latching button and put a bat logo on it with a chrome plastic surround, and you could wire in one of those annoying MR.T voice Box things so it says "I PITY THE FOOL!!!!!" every time you change the pickup!!!! AWESOME!