I heard stories of classical guitar instructors breaking students thumbs for wrapping them around the neck to avoid the full barre chord. Luckily for me, my mentor taught me that style. If I was playing an F minor, I started reinforcing my index finger with my middle finger over the top. This was especially useful when playing my 12 string. I play a lot in open tunings, particularly open G, and the F chord is considerably easier to play there.

Duane