I did it & was none too impressed,im not johnny pro grower so take what i say about this for what it is,my experience & my experience only,ive read about people having excellent results doing this but my results sucked.
I had not intended to try this,i was starting 100% from seed but due to reading a thread that teaches the perpetual sog method i switched gears mid grow,i had some seedlings that i decided to just throw into flower with everything else since i would not need them any longer after moving to all clones.
I ended up with plants that grew very strangely with uneven internode spacing & very small buds,the colas were none too impressive either,they grew bud but the yeild was so small for the floor space & lighting being used i'll never do it again.
When i compare the yeild from the immature seedlings with where im at right now using clones from sexually mature plants there is no comparison,the clones are the hands down winner in yeild & in plant structure.