Not stunned, but it IS a great volume pedal for anyone who needs/wants one and doesn't mind the size.
I don't have a lot of experience with volume pedals though, I have used the volume knob on the guitar for the last 47 years or so (not to be "cool", I'm just lazy) with the occasional "try my buddy's new pedal".
I use the VP between the Shure reciever and the rest of the pedalboard.
Build quality - sturdy, no plastic parts here, metal all around.
Soundwise it doesn't colour your sound more than a good guitar volume potentiometer does.
The tuner output is a really nice addition, you can leave the tuner on and choose whether the guitar/instrument should be heard or not.
The size should be considered if you want to put it on a pedalboard, smaller pedals are manufactured for a reason.