kinda, once you have a few good pokemon (ev trained or otherwise) and access to the battle tower/battle frontier/battle subway you can buy them for 1 battle point (currency for said facilities)
with a exp share the pokemon holding it gets the evs as well as experience even though it doesn't battle (I'll go into technicalities later), also a pokémon cant gain experience and levels without gaining evs outside of using a rare candy which lowers stats so you shouldnt use it.
btw, if you are not following me just say and I will try to make it a little easier to comprehend
you know am not a cloner but I know that there is something called action replay that lets you clone pokes and do another stuff like getting 99 master balss etc. but yea there is high chance of getting your saved data deleted