I have one on my Yamaha XTZ660Z. I like the simplicity of it. I have it routed to drip onto the chain at the front sprocket. I carry a half litre of chain saw oil or ATF,what ever I have as it were. I always forget to turn mine off...ho hum
After I trip to Morocco I found that it was leaking at the base. I took it apart,cleaned it and re glued it with plastic glue cement..the likes of what you use to join plastic guttering or build model airplanes.
All works well now.