My wife and I have a set of Maxi-Snips by Cannon Sports. You know, a scissors bent like a bandage scissors that is often depicted cutting a penny in two. They advertise for about 4 bucks, but you can often pick them out at Wallies for about $1.50 if you look.
We have been kicking the sheepdip out of them for about eight years. We even cut a chicken in two. (It was dead and cooked, you pervs!)
They are a little big to carry, but cheap enough to buy mutiple sets and leave them at home, in your car and at your office.