G/C from Dec 08 - Honestly, when I had it, it really wasn't that bad! It depends how high your cervix is - if your body is ready to labour, it's apparently not too bad, but I was induced at 39 weeks and the midwife had a lot of trouble getitng to mine, but I managed with just a couple of swear words and some evil glares at DH.
It's tiny, just on the end of the midwife's finger, and you're right, can't feel it all - all you feel (TMI!) is the midwife's finger applying it.
Hannah xx