Even though I'm not brewing on the large scale, I'm doing the same thing as others here. Hot tap water rinse/drain on MT, BIAB bag, and kettle is enough for most batches. I might need to swipe off the hop gunk from above the boiloff line with a blue scrubbie. If I start to see any crud buildup, then I'll do a PBW soak.
Fermenters and kegs get PBW every time.