yes even i have read this but i have actually gone full production and tested methodically. so it works straight out of the box so to speak. you can use it in production mode with no or little issues.

one quick note they say test it first to make sure it does not mess up your cart if you have any mods that may overwrite the files it does. especially the order.php file. its a big one. but if you look at one of my top posts here it will show that i have an extensive modded store and still works better then any other. hope this helps and happy selling