I fully expect it to work as advertised.

I have to start by saying I am one of the 20 percenters that ordered an incorrect size.  I was in a hurry and thought I could use the paper ruler with lubricated fingers. I could not, and you cannot, so just wait on the measuring kit. That said, I am completely satisfied with the service I have received and after trying the device on (even at the wrong size) I fully expect it to work as advertised.