I actually had a pretty good (?) experience with urodynamics. A nurse specially trained in doing the test was so kind, and gentle. She explained what she was going to do, and told me when she was going to touch me, etc.
It wasn't the most comfortable procedure, but it was helpful to have someone so professional and kind.
The surgeon was the same way when he sent a camera up in the bladder to check things out. He explained what I was seeing, and showed me when the bladder walls were spasming...yep, that is an MS bladder...sigh...