Yes, I have experienced vibrations while someone else is rolling the aircraft. As FDR points out, the wing is long and flexible, so abrupt aileron inputs (often from those recently converted from a side stick type) send a ripple up and down the wing which feels like vibration but is actually closer to a PIO.
The acid test is to engage the autopilot and see if the “vibrations” or “turbulence” continue; often they mysteriously go away at that point...