Is anyone using double bottles on a sk19 or impact? How does the gun handle? Is it awkward to hold? Does it totally ruin the ergonomics of the gun? I have a stock 480cc bottle now and trying to decide between a 700cc or double bottle. I'm happy with the 480cc but itd be nice to get situated in a spot and not have to bring an air tank. I've got to reload every 19 shots so maybe it's not worth getting a bigger bottle or double bottle. Let me hear opinions.