When I play barre chords using jazz voicings such as in the following chord chart:

I often wrap my thumb around the neck to fret the E string. I prefer this, rather than using my first finger, as it makes it easier to play more complex chords since it frees up an extra finger. I want to know whether this is considered 'bad technique' and whether this has any negative long term effects on playing.

Thanks in advance.

When I play barre chords using jazz voicings such as in the following chord chart:

I often wrap my thumb around the neck to fret the E string. I prefer this, rather than using my first finger, as it makes it easier to play more complex chords since it frees up an extra finger. I want to know whether this is considered 'bad technique' and whether this has any negative long term effects on playing.