YES! I just finished harvesting three plants, but it was an indoor grow. They averaged about 3' tall with an average of about 3 oz of bud dry weight (not counting popcorn buds).
Larger colas were about 6" tall and 2-3" diameter. I had to get the grow finished in 70 days or less so I didn't train them very much, just a little LST so I didn't extend the time any longer than anticipated. Used LED lights and coco/perlite. They look and smell great but aren't quite as strong as some of the other strains I've grown. Definite couch lock though about 20 mins later. As Nebula mentioned in GWE I would consider FIMing some auto's next time as long as I can wait an extra 2-3 weeks and am going to use strains with 70-80 days maturity schedules....that way I can probably get away with FIMing them once they have 4-5 nodes.
Nice plants and good way to get an idea what one of the "mother" strains is like before it has been bred with others....though the OG is a hybrid itself. Outdoors you'll likely be able to exceed that harvest without any training.