Subject to style the position is important, The eye must see it uniquely at some point, the mid-position between the barrels is for traditional gun down shooters that move and mount, the high position is more effective if you pre-mount or mount and develop the shot while mounted.I thought it was B$. I tried it today and bought 2. I have it in a completely different position than they show. I don't know why they put it there. My coach put it higher on the barrel. I struggle with fast edgy curling incomers and it helped. I've wasted many dollars building skill on those pesky targets, so if I waste a bit more, I'm not terribly sad.
Please note that I have very, very slight dominance issues. I am not central dominant as some are. It's more of an insurance thing.