HDMI switcher/repeater question

[Blu4ever]

If I purchase an HDMI switcher with 2 inputs, do they simply carry the signal through without concern for the direction of the signal? This may sound confusing but what I need is to take one HDMI input (say from my PS3) and use the switcher as a selectable output (1 in, 2 out). I have my projector and TV running off of the same component stack.

Can I use a standard HDMI switcher for this function or will it not allow me to select between to different outputs simply by reversing the way it is traditionally setup? Or will it only output a signal from the 1 ouput port?