Have Scottoiler on my Speed and an automatic German system (do not remember the name) on my Tiger. Works perfect, though it is true you have to clean the left side rear wheel rim more often. I disconnected the breather hose from the airbox and rerouted to the chain near the sprocket, so oil vapours are recycled to the chain (and the engine breathes only clean air). Use to change the transmission kit every 75k kms, just because the chain ends up elongated. Never had seized links.
Very interesting post.