It may be that someone has done that, but we’ve not heard from them yet. Subfolder installs are difficult and getting it to work with a system that makes a bunch of assumptions is likely to be more difficult.
I don’t wade in to the SEO debate.
If you have a budget, I might be able to help. I charge $500 to do it on a vanilla install. I would need to have a look at easy engine to know if that will complicate things further. My contact info is in my profile.