Got given this as a stocking filler, it's nice and cheap and does the job perfectly. Can't fault it at all. The tension is higher than any of the similar plastic expression/volume pedals I've tried which makes it feel much higher quality.
I'd recommend this to anyone looking for a volume pedal, I can't comment on the longevity of this pedal but on first impressions this is a great option.
Have been using this as an expression pedal with my modded POG and it has lasted many years with no problems really. However I would slightly worried if the signal was going through it, but the mechanics of it are quite good for its price. If anything goes wrong soundwise you can always replace the pot on the cheap