Great feedback everyone. I am in the same boat as others who replied, I don't want to go back to the truck to get a saw if myself and a couple relatives can get it out in one trip. Also, in the winter time, the meat will last over night so horns and as much meat as I can haul are going out on the first trip if it is just me by myself. With that being said, I need to have somethig with me to cut off the skull cap. I am not crazy about a wire saw for the simple reason that it takes two hands to operate it and any movement in the head while I go back and forth on it could stall my progress. I did find a couple good items on the internet that are light weight and seem effective. One of them I am not ready to divulge until I find one. I don't think they are in production anymore.
Here is one option that I thought looks pretty promising- Mini Dandy Saw
http://www.amazon.com/12-Mini-Dandy-Saw-Scabbard/dp/B000B0I41Q