the plants i have going right now are in coco/compost mix and they seem to be doing well so far, haven't noticed any hydrophobic qualities yet in fact I've observed that it uptakes and stores water very well almost too well, i accidentally over watered because of said water retention.
i'd agree with Rsawr and amneziaHaze most likely fem slight chance of herming but that seems to be rare. i'm running some bag seed right now so we'll see.
i think this might be something you're interested in
heard it was a good choice for commercial growers too
https://www.linda-seeds.com/en/buy-autoflowering-marijuana-seeds/hybrid/high-content-of-thc/extra-large-yield/auto-giant-devil-xl-linda-seeds