So would you recommend I just get a gummy stone, so I can de burr if I need to (good chance I'll meet some icey conditions), then worry about sharpening properly next season if needs be.
I noticed that arbor have detuned from the factory so not worried about that any more.
I gummy stone doesn't really deburr. You need a diamond stone to deburr. Use the diamond stone first if you end up with any knicks and then polish with the gummy stone. I personally only use the gummy stone semi regularly when waxing and occasionally clean up knicks and burrs when waxing.