if you want to take the more natural approach, find a strain that's similar to your clones and just keep back crossing it to your clones 4 or more generations. you won't get exactly the same strain, but after enough back crosses, you'll get something pretty close. every time you back cross, you cut the other strain's influence in half
B x A = 50% of your "A" strain
(B x A) x A = 75% A
[(B x A) x A] x A = 87.5% A and so on and then cross the two strains when you finally get mothers that are close enough to what you're looking for.
in the post above, they mention using colloidal silver to force one of your plants to produce male flowers. that IS the definition of hermie... a plant that is both male & female. it isn't bred for hermaphroditism, but when you breed that way, you increase the chance that the trait will show up in your offspring which should be feminized at that too as there was no actual male used in breeding. that's why many growers don't want anything to do with femmed seeds, especially for breeding.
if you only wish to propagate your two cuttings, just keep them in vegetative growth and take more cuttings from each of them. you don't need seeds to reproduce and cuttings are super easy to make. you just can't clone autos because they don't have a vegetative cycle