I've never grown autoflowers before, but in theory they should be great for SOG. The autoflowering comes from crossing with a cannabis ruderalis species. Ruderalis plants only grow with a center stalk, no branching, so they would fit in a SOG nicely. The problem is it would be hard to get many clones off a mother since it wouldn't have many branches. Though i'm sure good autoflowering strains maintain good branching structure from the indica/sativa side of the family. Flowering under 24hrs light might get you some massive buds...