Oddbean new post about login | logout just tested POW + WOT both enabled - it stopped me post from non-POW client - so POW will additional STEP that can be ENABLED optionally. but poster need use compatible client in that case.
I guess it would require changes on both the server and client side to work how I imagine it. I’d expect to attempt to post a note and then it just goes through because my score is good, or it would return stating the client must meet POW requirements because my score is too low.