Although my 2012 Camhead already has a smaller alternative make/style fender extender fitted, at £19 with free delivery, decided to order one from NN.
Hopefully, the MaMo fender extender will cover the screw holes securing the existing one and give better protection to the engine & exhaust system.
They do give better protection to the front of the engine area and cross pipe, they're not perfect though, as they divert the water/crud at the downpipes and where the cross pipe joins them. Still much better than nothing and a vast improvement over the wunderlich one, which is pretty useless.
Avant Fender Extender fitted today. It's a nice piece of kit, the fixing arrangement is very clever. It nicely covers over the 4 off holes already drilled in the fender for the previous Pyramid offering. Looks a bit more agricultural than the Pyramid version but should give more protection which is kind of the idea.