Only garlic that I've ever grown was a a lump that got "lost" in the bottom of my fridge, and subsequently sprouted (as opposed to turning into mush), and had a good 4" of green growing out the top. I don't know if it was hard or soft neck, but was purchased from a fairly small local producer.
Unfortunately it died shortly after i transplanted it to a big pot of "potting mix". I suspect that it didn't handle the climate change.
The scapes, taste quite similar to (and can be used in place of) a shallote or chive. It's perfectly okay to harvest a few of them as the plant grows.