I have been running 20/4 in my veg for about 6 months solid....I only veg S1-2's clones and I have gone back to mostly seed about 80% each run....
I have been finding more than two,so a few, semi autos in my s1 and s2's....under this new light regime....and I rarely would find them before and I am running a couple different lines of bx's....so its kinda cool actually imho, I like finding weird chit.....
I have vegged at 16/8 pretty reliably at times too....Sativa's or NLD's or whatever you want to call them, something that comes from the equator, probably likes this veg time a lil better especially IBL's....softens them up a bit......It is not surprising that weird things happen when you drop from 18/6 to 13/12/11 On...and these type of plants rarely like it straight up and they have a good percentage in modern hybrids again imho, so thats where I lean, but it can be boring and exhausting work at the same time too....gotta love it