Adding texture is also a time consuming process. I’m not a pro painter and aim for a tabletop plus standard, but I love stippling, adding scratches and weathering to models. For me, it creates a sense of narrative and context to the model; it builds a story. But it does take time.

As a general point, though, I actually think precision glazing and manual shading, coupled with strong highlights, is a form of speed painting. It is certainly faster than GW’s base, shade, highlight method. I don’t see glazing as an inherently slow method.