yes, i do it all the time, even deleted events and shinies due to only having one game at the time.
i play pokemon mainly because i enjoy trying all different kinds of challenges and honestly, if i ever feel the need to fill a dex, which i probably will seeing as i have some spare time and managed to get my hands on every single version since platinum, i can simply borrow or hack the few events i'd lack and give them back/release them afterwards since i have no use for such pokemon even on a competitive level.
i only like legends for story purposes and don't really care about shinies especially with the new rules brought by 5th gen.
oh and by hacking i actually meant pokegts. i never owned a cheating device nor will i ever own one. just wanted to make that clear