This is a seriously well-engineered pedal. It's extremely solid and weighs a ton - an advantage and a disadvantage, I suppose. It comes with fixings for screwing to a board, with cutouts and holes on the pedal base to accommodate the screws, which is a nice touch. The whole thing feels very high quality.
The 'throw' of the pedal and the way it feels underfoot are great - a nice wide range of operation that beats those pedals based on a wah chassis for feel (like the Mission VM pro, for example) and makes swells and minor alterations much easier. The buffered output is in my opinion a good thing, and the option of the direct out is a useful touch, too. The 10db boost you can dial in from the rotary control is a useful addition though i have no current need for it. Maybe i'll find one though...
I have only one criticism, and that is the location of the power supply socket, wedged in between the edge of the chassis and the output jack. This means using an angled power cable (as provided by Cioks by default, for example) is more difficult than it should be. Lehle - if you're listening - a small cutout in the base plate under the power socket would be a nice addition in future. Oh, and the manual is a bit mixed up with some German and English pages mixed up. Easy to figure out though.
Other than that - the best volume pedal I've tried by a large margin, and no pots or strings or gears to wear out!