Good side cutters do an OK job on cables. A strand or two may snap out of place but a rotating twist/pull between your fingers will lay the strands back into place and leave a nice clean end.
The cutoff wheels do a great job but they ALL will soften/melt the inner tube from the heat of grinding through the metal spiral. A scriber or sharpened spoke to poke the end back open and produce a little bit of a flare while the plastic is still soft works wonders. Be quick because the plastic cools fast.