In a noisy crowded room probably not, but in a quiet room you can hear it...more so you can feel it as it doesn't zoom fluidly like the 70-200 does. Focus ring feels like it should but the zoom ring definitely has something wrong with it.
Hopefully, the've sold quite a few since yours and it comes from a different batch. Are they aware of this issue? Hey, that one will probably hit the refurb market now.