Who bets against mathematics loses, almost always. While that is true, CS people also snicker at mathematicians, because they usually are not able to write good and readable code, unless they also have significant outside of math coding background, which they usually do not.

The other secret is CS faculty don't care because if they wanted to study math they'd have gotten a math PhD instead of a CS one. =)

EEs do both, but they’re not laughing at anybody because they’re too busy getting the job done

but do they do "both" well... generally not. =)

Well the ones I’ve worked with were all pretty damn good…

Depends... some are like getting software people to build a vehicular bridge. =)