As far as I undestood, it's a standalone behaviour blocker that comes prepackaged with McAfee Stinger. It's ~7 MB in size and doesn't consume much cpu. Is it worth to use it? Would it conflict with the WD's behaviour blocker?
I just installed it. Real protect is not in the same folder as Stinger. After opening stinger it creates directory in "C:\Program Files\McAfee\Real Protect" and runs in the background and there's a icon in system tray which lets you check log, quarantine, etc.
Here's Real Protect in action. It detected the exe of Brave portable of portapps but this is a false positive. It couldn't stop the program from running though. Brave working fine before clicking on Clean so not sure how effective it is.