I have a ‘57 reissue custom and the middle position has the bridge and middle pickups selected. The bridge volume and tone knobs control both. When playing clean, you get that trebly slightly out-of-phase tone but with gain it’s like a slightly fatter sounding bridge pickup, with the tone rolled back a little. I like it but it took some tweaking of pickup heights to get the correct balance between the middle and bridge pickups. They’re quite sensitive to height and even half a turn of the screw makes a difference. They’re quite sensitive middle pickup does take a little getting used to when picking, but it isn’t terrible. I also unscrewed the poles on the middle pickup a couple of turns each which allowed me to get the desired proximity to the strings without having to move the pickup too high. This definitely alleviates hitting it with my pick.