As long as you have a little skill with a screw driver you will be fine moving the bindings between skis. Just make sure you use a good binding glue (not epoxy) and make sure you turn the screws backwards first to locate the threads again.
However if you not experienced with doing things like this dont bother trying unless you can find an old pair of skis to practice on.
Also make sure if you do it you do it the night before you plan to ski, not the same day.