I think the .012 No-Nik should work with .010 wire without too much issue.
AAMOF, that's what I use on he .010 wire, I just checked. I never even gave it a thought previously, they've worked flawlessly for #30 wire for years. Note the diameter of the wire and the designation on the strippers in the shot below.
Ignore the red pointer, that's for metric measurements, it's a dual-scale caliper.