I've got a Logic one like that. Ok for grass but you have to go very slowly through anything much tougher...heather etc. Going slowly on a quad is very sore on the thumb, but I've adapted the control cable to fit it on my little JD garden tractor. I would really like to replace it with a proper PTO driven topper, but that would mean a bigger tractor....my time is cheaper!
Too far away to borrow or you would be welcome!