A few, yes GT. It isn't that uncommon really.
To be fair - the internals for induction are far worse than when in labour, because the cervix is quite posterior still. In active labour the cervix has moved to a more central position, and requires less pressure to reach.
Early inductions (under 41 weeks) again are more painful when it comes to internals because the cervix is much less likely to be 'favourable'. So again, it comes down to the cervix being even more posterior!
My best tip - use the gas and air, and put your hands in to fists, and put them under your bottom, to lift your pelvis - this makes the cervix easier to reach. Also, get a small pillow, or towel (find a rolled up hospital towel works best for this) in the small of your back to support it. I do this for smears, as I used to freak out (had colposcopy etc) and it turned out it was the pressure in my back that was making the pain so bad. As soon as my back was supported and my pelvis in the right position, the discomfort was minimal.