Here's what i find with winter commuting. Daily riding, whatever the conditions, rain, sleet, frost, snow...and the occasional nice dry day even !!!
Grit gets into your brake blocks...don't pay attention to it and it'll scour your rims.
Debris loaded with road salt got in my front fork brake nut recess, corroded, lifted the carbon from the alloy steerer.
Debris loaded with road salt can get in your BB. The FSA BB on my good bike wouldnt last a winter (mainly because the FSA BB is
cr@p )
I genuinely find the amount of debris and grit that gets in your transmission when the roads are particually grimy require you to clean and lube a chain almost every other day.
The spoke elbows are corroded on my Tiagra wheels, i only use that bike in the winter.
Anything other than stainless brake and gear cables will require extra care or they corrode...leaving you wondering why your shiftings all gone to pot.
Perhaps i'm being a bit OTT..you doubtless can use your good bike...i simply choose not to.
A good steel frame, 8 speed transmission that wears a bit better and is cheaper to replace than a 10 speed, mudguards, and a bike you don't mind scraping along the floor when you slide over in ice (as i did twice last year)