Sorry Bill,
Can't see it'd work on a Beeza one, as the pivot point may be removable, but seems is cast in, and the hole would need to go right through, and the components interchangeable, which they're not.
Also the vent would be facing backwards,unless rotated upside down, which may or may not work either way?
With other constructions it may be possible, but I don't want to get involved with that.
However I still can't see why it shouldn't work on the rear, and am sure I've at least heard of it done, on the same side, with same relative wheel rotation??
If you hadn't guessed, 'going in reverse on the Moto', was partially tongue in cheek, except for parking and a failed bump start, when I need to push it back and try again!!!
Cheers, duTch