"You might be unlucky and ace EFT with 5's but if there are no slots, then rotary. Might be average when they need people and you're sorted"
Wrong. If you achieve 5's at EFT, are assessed as having the drive and want to go, then you will. If there is no slot (unlikely)then you will get the next avail. Nor will we send Johnny Average just to make up the numbers if no-one else comes up to scratch.