Does anybody have this hutch? I have just ordered it (arriving tomorrow) and I am just wondering about the top floor where the ramp does down. That whole area appears to be open to the ramp and am just wondering if anyone has had any problems with it. I am thinking that it needs a barrier along the front to separate it from the living space but just wondered if anyone else has that hutch and has whether it is considered dangerous with it being so open, or whether if has been perfectly fine and the piggies know that the gap is there.