I have grown out a number of things (5-6) from Ethos, and certain strains do certainly throw off an occasional hermie. Ethos routinely admits it, and it's something you need to be aware of. I always grow 24 plants at a time, and have never found more than 1-2 plants of any 24 that had some male flowers along the main stem. Some strains were completely clean of nanners- so it pays to do some research before spending the 3+ months growing something out.
As stated above, certain strains i.e. Gorilla Glue #4 and some OG's are well known to have slight hermie tendencies, and if you grow them, you have to expect some hermie action. Sucks, but if you want the genetics, you take an occasional chance here and there.
I have at least 5 full grow reports on Ethos stuff, from day 1 to the end, on RIU and they were all impressive grows per all the comments and likes I received. Feel free to go over there and look some over, I think it may change your mind. I should also state some grow methods, low lighting, over watering, over or under fertilizing, etc., tend to bring out some hermie tendencies. Dial it in and that might lower your chances for hermies too.