I'm being a little snarky here, but if you are truly a macho developer, then crapping out that unsafe code in optimized assembly or C or something is a really really easy time to show off and shouldn't be such a big deal for such a seasoned developer. Instead, the question is always raised in this more insecure way: for that tiny percentage of the time you have to do some bit-banging (and it's usually pretty small and encapsulated on most embedded projects) you had might as well do the whole thing in C or C++.