Can you use both a condom and a diaphragm together safely?
I know that 'double wrapping' (two condoms) is a no-no based on increased risk of tearing due to friction.
Searching on google so far is not enlightening me.
Edit to add: still happily researching. Looks like the trick was using the word "simultaneous". Anyway, it appears to be considered a good technique.
Diaphragms and condoms for prostitutes [letter] http://www.romainrochat.com/planes/ang_diaphragme.pdf
Anyone have any conflicting / confirming stories or links?