I'm a contractor so I switch roles and projects a lot. Much of the time the project is already in full swing and tightly bound to a particular IDE by the time I'm brought in (which is usually because something has gone very wrong and they need help).

I find that being as IDE agnostic as possible, rather than coming to rely on the features of any one IDE (or editor or whatever), helps me just dive in and get going faster.

Raw speed at churning out lines of code seems a lot less relevant to me as time goes on.