This is the only time that I will utter this name anywhere close to a recommendation, and it hurts to say it.... CUTCO "super shears"
Closer to tin snips that scissors... They will cut anything softer than steel with no damage. They are like the meat cleaver of kitchen shears. They twist apart easily and even the twist pivot is adjustable and comes apart. No seams or gaps on the over-molded high density plastic handles.
I don't know what retail is on these things now, but like everything cutco sells, I'm sure it's too high. That's what ebay is for.
Also, I bet that these are good too: