i anchor when i play my acoustic especially in plucking open chords. have yet to notice any anchoring while playing my electric. maybe i do so subconsciously. haha.
i used to anchor,but found out that it hurts more after playing a really long and fast alt picking run.it also restricts my motions.
but its up to you.anchoring for me is like using crutches,and we dont want to be reliant on crutches all the time do we?