"On Windows, you can use tags just like you can in Evernote and can add custom tags."
This is incorrect. OneNote tags are not like Evernote. Here are the differences I have found:
Evernote tags an entire document / OneNote tags are within in the text of a document.
Evernote tags are visible at the top of the page / OneNote tags, which are in the text, do not display. You need to hover your cursor above them to see the tag
Evernote does not use symbols for tags / OneNote has the ability to use symbols. I tried using 'none' as the symbol, but you cannot see the tag on the document.
Evernote has an interface to easily manage tags / OneNote does not.
I'm frustrated because I have been using Evernote ever since it came out. However I need to use OneNote for work and it is much harder to find information in a way that is similar to Evernote.