I was thinking of adding a volume pedal to my rig, but have never in my 30 years of playing (ever) used one before. So please pardon the dumb questions... Is the "heel down/toe up" position full volume or no volume? For passive pedals: I'm not sure if i would use it early or later in the chain, but probably later after dirt pedals. I figure if first in the chain, it would be like a second volume knob on the guitar. If I use it later in the chain post-dirt/fuzz, how would that impact the sweep and performance? I've read that placement after a buffered pedal will minimize tone suck. But how does use after a buffered pedal impact sweep/performance? Any advice/recommendations for passive VPs? Thanks!