I love the control / option copy as path trick, but can never seem to remember it, so I end up using Finder services menu to let you extend this function. By design, Apple only shows a path for network share files in the get info pane so you'll need to attach a service to Finder to get this in general (for reasons, I'm sure I'd love to hear over a drink).
That being said, I use Path Snagger 2 and am super happy with it as I can control POSIX/SMB/HFS and file://whatever format for the path that gets copied. You can process several files at once, control all sorts of tweaks to how the path is constructed. I also don't have to do multiple clicks and I copy off paths all the time so it's worth the expense to me.
I could see making an AppleScript or swift script to do this for free as well if you had a well defined string you wanted to get from the location of a specific file that would be general to all files once you coded it. This would only be good if you didn't know to connect it to services for quicker execution than the built in way or needed a different format for the path.