One group I run with plays mostly in person, sometimes almost entirely old-school with dice and PnP character sheets.
The other is 3000km away and uses Roll20 exclusively (with Discord for voice). In those games, I track creature hit points and injuries with the three little circles (red, blue, green) that pop up when you target the token. I do look forward to using the R20 character sheet (thanks, Nash!) for future Roll20 games though (it just wasn't available when I started the campaign).