It will live. This is actually a technique I was working on. Germinate the seed until the tap root is as long as possible, then right into a net pot. It works, the only problem was getting seeds to consistently germinate with long tap roots, without them dying lol
Great job dude, I love to see you experimenting! Essentially, you just propagated a seed with no "medium" (technically the water and hydroton would be considered a medium here, but you get what I'm saying!). It doesn't get much better for hydro growers!