Maybe I missed it, but I use a tool that is non conventional, and I wouldn't trade it for any wire cutter when it comes to trimming wire leads on a pc board. Nail clippers yup, they are perfect! Just don't tell my wife.
I do the same thing. They get dull quicker but I just buy a couple of the 98 cent clippers at wallyworld so I have them. Toss when too dull. I've also used them for as long back as I can remember for cutting the extra line when tying fishing knots or making up monofilament leaders. Never did like using my teeth for that. They work great for trimming you nails too :-P