It took me a few hours but I managed to dual boot my old early 2008 15" MacBook Pro with Sierra and Elementary and I'm impressed. Not only due to being able to set my MacBook up but also with Elementary. It's so "Mac" like that it's made the transition from MacOS easy. I'm very impressed so far. Now all I need to do is to figure out how to up load an avatar.
I just started using Elementary on a dedicated machine and it seems to run very well. I did a few custom mods to spice it up a bit. Don't forget to also install Gnome tweak for Elementary it will give you more features