I only shave WTG in those areas and mine is smooth. As a warning, just the other day I had an ingrown hair right below my lower lip on the right side that festered and I had to extract it. It was a result of getting too carried away with a new blade.
The toughest place to get to on my face is right under my nose and admittedly I keep a modern single blade disposable handy for touch ups there a few times per week as it can cause great irritation going over that area repeatedly with a DE and trying to wedge it in.
I wouldn't fret over it to be frank.