I just did that and ended up with several 1 x 104 or 120 rows, idea being to use 2 at the most (so perhaps not exactly concise, but compared to 6u, pretty big step down).
I’m considering building a couple of 1 x 60 sidecars for things that end up getting used a lot and just struggling with building the custom cable links to avoid having to put power in each.
Also thinking about making clip on ears to allow a two-level (apartment building
) rack setup - just enough room for cables to reach out and up. I have fairly limited space near my computer and I really don’t like vertical mounts at all. Two tiers at about the same tilt as a mother 32 works better, but I don’t want the ears to be permanent as I want to mix and match what is upstairs and downstairs. Probably going to use retro hardware to make the joins.