imvho, when you cross ruderalis, which is basically ditch weed from russia, with any non auto flowering strain, it's only going to lower the potency of the strain you started out with.. idk why people would want watered down genetics so they can save a few weeks in a grow..
i know autos have come a long way from say the lowryders, which i think were some of the first autos sold, but they still all contain that ruderalis gene, unless we're talking about some of dr greenthumb"s autos, which aren't truly autos as they contain no ruderalis genetics, but rather a strain he says comes from iran, which one can keep in vegetative growth by giving the plant 24 full hours of light..
i've yet to grow an auto personally, and don't really see myself growing any, other than maybe for shits and giggles since i have a ton of auto seeds i got as freebies that i'd grow out while i was waiting for my photoperiod plants for finish..
another down side not including yield, is that say you get an auto that you really like, something special and fits your needs.. you can't really clone it.. ok, ok, technically, you could cut a part of the plant off, root it, and grow it out, technically making it a clone.. the problem lies in the fact that the clone from any plant is the same age as the mother plant which it came from.. being that autos flower from time, rather than by light, the auto clone would want to flower pretty much as soon as it started to root, meaning it'd yield poo poo since you couldn't veg it out longer and get it to be a decent size before flowering, pretty much making clones from autos useless, again, imvho..
my $.02