Best scissors for cutting braid is........................... Wenger pocket knife with the scissors on they come in two sizes small and large. Works all the time and another site has a video of his one.
I also have The Snip from Boomerang and so far these too are very impressive. I also have the Edge World Ceramic scissors for indoor work and they too are very impressive. With Ceramic scissors you have to be very carefull not to drop them apparently they shatter so I'v heard but ...... I do not know for sure because I work with these at home and my den has carpet on the floor.
The Wenger scissors are the best they are serated on both blade edges.
Hope this resolves your question.
Best wishes from Pete.