Ime, no they wont. I got a naso shipped from Hawaii straight out of the ocean at 7" in size. The spikes were clipped (I don't like it when they do that) and they never grew back in the 4 Years I had it.
I just got a blonde naso at 7" in size and it has pretty big spines. I was able to get a couple top down pictures of them. Imo, they look better with the spikes over being clipped.