scrog is just groing under a screen, making one plant fill out a lot of vertical space for an even canopy, so for that it doesn't matter, clone or seed the plant will fill up the space if you veg it long enough.
with a sog (sea of green) you are growing several plants to take up the space, so clones are reccomended because if you use seeds you will get varied plant sizes and the canopy will be difficult to maintain. lots of people use autos in a sog setup but i've never messed with autos myself.