Realistically everything topology-wise should be fine, as long as it doesn’t bother anyone. You can have poles, Ngons, triangles, in a place where it doesn’t cause a mess. And lots of times you can have them in places that do cause a mess but you hide it pretty well. In the end, it’s all about the end outcome, if you’re going to present a good model and people are going to inspect it expecting it to be a god model, then you can’t get away with anything. But if it’s only just the outcome, what’s going to be on screen at render time, so much easier to get away with stuff. But I know, what you’re after is knowledge, trying to understand how this geometry behaves, it’s quirky to say the least.
