IMDB and other sources assert that the character of Switch was intended to be female inside The Matrix but male outside in the real world, and that this concept was later refined and/or blocked by the studio.
When Belinda McClory auditioned for the role of "Switch", she was only going for half the role. The character was originally planned to be played by androgynous actors. In the real world, it would be played by a male actor and in the Matrix be represented in a female form, hence the name "Switch". Warner Brothers refined the idea and McClory ended up getting a single female role in both environments.
Is there any primary evidence (e.g. an interview with either the makers of the film or the actress who portrayed Switch) that this is the case?