Almost always a onesie for me to work, sometimes other times. I was always a crisp white t-shirt guy, still am, so wearing a onesie with a snug crotch is a win-win. I get to wear something that helps keep my diaper in place and nice n snug when wet or messy, but a nice undershirt too. Weekend wear for me is usually jeans and hoodie, and a onesie is great in this too! But not for workout, usually just an adult disposable underwear or pullup for working out.
Oh, also love other colors of onesies too, I have blue, light blue, black, and gray....