I'm a pretty technical user, but I'm also extremely short on time, so another benefit of the managed option is increased productivity, as long as I either trust the management software completely (unlikely) and/or make sure I can find the originals if I need to. I use Apple Photos to manage nearly 20,000 pictures and iTunes to manage ~45,000 tracks, but I know where my files are!The "managed" library option was designed for non-technical users less comfortable with working around the computer's file system who want a one-stop option. Those are also likely users with limited-size libraries that'd work well on a single machine. Any heavy shooter or pro would want referenced libraries. That's where Aperture excelled, with a robust reconnection interface for when systems migrate to new computers, files get backed up, etc. Worked flawlessly. This is also where Capture One can [lose sync, if you] make file/folder moves outside of the program. Short version: don't do it!
As it turns out, though, when I take photos with my Canon 70D, the Canon software is better at correcting the lens characteristics, so I use that to correct for my lens, generate top-quality jpg files from the corrected Canon RAWs (CR2s), and import them into Apple Photos. I would have loved it if that step were not necessary.