I'll quote youtuber "Sucker4Jessica":
When I ask players how they will feel about having to resort back to EV training, the often response is "There will be something we could do to sav or gen them."
As much as I want to believe this, in my opinion this is wishful thinking because the 3DS has been out for 2 and 1/2 years now and there isn't a single cheating device for it that plays 3DS titles which wasn't the case in time productivity of cheating devices for the GameBoy Color / Gameboy Advanced / or DS handhelds excluding the 3DS.
It doesn't seem possible, but who knows, maybe something weird will come out that lets you Gen pokes. Remains to be seen, I guess.