well, i havent been banned yet if that helps

As for being able to detect your loader, you'd have to literally tell someone in game that ur using a loader and even then i doubt they'll find out u use it. They could maybe also detect it if you repeatedly try to log in, but then again they culd also assume u are opening the original client multiple times because of the delay to relogin with this client. Another way is if you're using multiclient, but then again u culd have more than one comp :P
So, it's impossibly hard to tell that you're using this loader

If you're worried dont use it, but i havent had problems yet.