Makes sense. I'm already looking at the reference for my gun rail and how I'd do it in Max cause there are just a lot of elements in ZBrush that would make it difficult. Practice practice practice
I haven't done much sub-d lately so I decided I would practice this workflow tonight: Booleans are indeed awesome :D The damn cleanup still takes forever, I couldn't figure out how you boolean'ed in support loops as you mentioned, Perna, so definitely elaborate on that in your guide.