I like it a lot. I was a little nervous at first about drilling my tank but after I did some research on it I said the heck with it and just went for it. I am glad I went this route with it instead of the HOB overflow
Drilling the glass is absolutely the most nerve racking thing I've ever done, but I'm comfortable with it now and I do it every time with out hesitation.
My setup is exactly like beananimals original drawings. It has a coast to coast overflow inside the tank and the three pipes come through glass and to a sanitary TEE above the TEE is a threaded adapter and cap, below it are my BALL valves[emoji20].
I put air lines on my full siphon and open channel pipes. I also added ball valves to both air lines for complete control and adjustability.