Waiting for my my first cold brew (er... room temperature brew) coffee to finish. So far:
1. Overnight is not enough.
2. Insane usage of ground coffee. CRAZY amount of ground coffee required. This is not great, unless it concentrates quite a bit.
3. Plus side: will definitely be good for hot mornings, when you don't want actual hot coffee.
TBD how this tastes with my own roasted beans, I was handed a already roasted packet of Kona coffee, which apparently was on the clearance aisle at Walmart in Kona, Hawaii a couple of weeks ago. Not bad, but coffee that was roasted a long time ago sealed into a bag most certainly has none of the flavor of fresh roasted coffee.