I don't think you can Traveller...but I do know that the midwife told me to feel between my legs because I'd find something (the head), so she must have been able to see something? Unless she was just guessing from how I sounded/behaved?

Re: clothes on or off, just see how you go at the time. I bought a top to labour in because no WAY was I getting my kit of unless I needed to, I'm a modest sort of gal. Or was. And seriously, the minute the middy said 'alright you can hop in the' - WHAM - my clothes were off and thrown about the room and I was IN the bath.