I don't really see any signal loss. The case is slippery and makes the phone heavier. It also does not "grip" very well. It looks awesome but the sweeping bulges interfere with using the phone. I am happy with the way it looks but not with the use of the phone with it on.
It fits in my pocket fine but it does make the phone very wide. I think it is bigger than a note 3 when in this case.