They probably do--most cutting instruments will cut lots of different things. The question is for how LONG they'll do it, unfortunately. I'm not sure what you mean specifically by floral wire cutters.
If you have access to a dollar store or a thrift store or a handy family member's garage, you can probably find a pair of pliers with a cutting head. Even when they're pretty dull, they can still work all right.
Or are you trying to find something that specifically WON'T cut the wire?
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