Just to echo what you just said, I felt it was useful for my first few tentative trips after recovering but now I am fully recovered and leg strength is good after a fair few years of working on knee/leg strength in the gym, I don't feel a need to wear one any more.
Thirded, I found a light hinged brace really useful to start with (a decade or so ago), but on my last skiing trip I lent it to someone who tweaked their knee on day 2 and didn't notice its absence particularly.
Just to echo what you just said, I felt it was useful for my first few tentative trips after recovering but now I am fully recovered and leg strength is good after a fair few years of working on knee/leg strength in the gym, I don't feel a need to wear one any more.