I think so.. it depends on the design.
A very basic crossfader is just like a normal fader, it just fades between two sources instead of one source and silence.
But generally you want a crossfader to be very smooth and light. That would really suck for a volume fader because even lightly brushing against it will make it move.
It might have a different, non linear or even adjustable fading curve, etc.. Not sure what kind of controller you have in mind, but those are things I wouldn't need or want on my volume faders.
That makes me think.. would be cool to use touchstrips instead of faders. A lot more complex to build and program though.