I find it's easy enough to adapt to - and switch between - either convention, as long as there is indeed a convention. What really hurts readability for me is

I find it's easy enough to adapt to - and switch between - either convention, as long as there is indeed a convention. What really hurts readability for me is when the structure is a random mix of top-down and bottom-up. Which seems to be regrettably common in many object-oriented codebases.