I have the Shimano cable cutters and use them for both wire and housings. Very good for the wire. I clean up housing cuts with a sharpened 14 ga/2mm spoke (known throughout Portland bike circles as "pokey tools". Sometimes I get fancy and further dress the cable ends with a file.
Workbench trick - staple 3" of cable housing to the bench. Stick your pokey tool in the housing. Always right there whenever you cut housing (and very useful for a lot of other things).
Ben