From my observation, different parts of the country have their own ideas on striping. I am in NE Ohio and we don't see many stripes, but agree that a conservative stripe might look good on an MKC.
In Florida (west coast) I see a lot of stripes that were installed by the dealerships. Since most stripes are no longer hand painted (now vinyl) they could be removed fairly easily with a heat gun or possibly some other means if you change your mind or at trade-in time. If you are old school (so am I - see my Avatar), and would like striping, why not? If you do so, be sure to post some pictures.
Fred