Yes, I have been growing hermies on purpose for decades. Goes back to a time when there were no seed banks or hybrid seeds. If you had a good strain, you had to keep seeding it to perpetuate your grow. Hermies were much better than a male/female setup. I actually induced the hermie trait on purpose using (if I remember right) asprin in water, sprayed on the plants.
I never get males or male flowers. Only the little nanners that pop up on a bud now and then. And, it would usually only pollinate the bud it was on. I have smoked about 4 ounces from my last harvest and I got about 10 or 15 seeds so far. That is my typical result of 2 or 3 seeds per ounce.
On the crop in the picture, I have 3 plants that actually got heavily seeded. The rest of the plants look pretty clean. I will devote those 3 plants to extraction experiments.
Now that I can get quality seeds easily, I am done with the hermie plan. LOL