Not for this American.

Normally, the longer axis is the X axis, which typically leaves the gantry as the Y axis, which is where the Z is attached to.
I believe that some people call the gantry the X axis because they stand facing the gantry, so the X axis moves left to right. Having the X axis move left to right is desirable, as that's how you'll see it in your CAD and CAM software. I stand on the side, with the gantry moving left to right.