The only time my wife has wore knickers in the last few years is when she wanted to wear a dress for work as the weather has got hot (about 4 times this year and 3 last), the rest of the time she wears trousers and has not wore knickers with trousers for more than 20 years.
When we are out together she will always wear a dress or skirt knickerless and sometimes when she goes out with friends as well which I really love
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When we are out in public I will put my hand up her dress and touch her bare arse, I lifts (elevators) I will leave it till the last minute to take my hand away before the doors open, we have been caught may times.
I fill very lucky my wife is Knickerless!!!