LFV-1 : A "swell" volume pedal?

I use this pedal for controlling my guitar level, for solos or what have you, and for atmospheric swelling and violining. It does the job well although the sweep of the pedal is a bit narrow and its difficult to be precise with the volume you want to achieve. At the lower volumes it can also tend to choke the sound a bit ( in an unattractive way ) It seems sturdy but I have yet to gig with it. I tried connecting it to a delay unit as an expression pedal but it didn't seem to control any of the parameters. However as a dedicated volume control it does the job fine. It leaves my hands to play guitar and it leaves nothing through when i have it set to zero and it adds no colour or boost at the opposite position. It is a no frills pedal and it works for the tasks I need it to. And for the price it is excellent value for money.