I ran Sport Demons on the K75s whilst it was in the UK - low mileage (~3k) over 7 years but they always performed well in often colder/wetter conditions. Still lots of tread remaining with even wear, but will be replacing due to age and have would either go with another set (I'm a big fan of Pirelli on the Goose) but also considering the Lasertecs as these seem to be essentially the old ME33/55 Metronic that I had good success with on a Kawasaki Zephyr - so in response to fastcars question my understanding is that they are the same company, but I don't think Sport Demons are the same as Lasertecs - certainly not tread pattern wise, not sure compound wise?
Gio
PS - fellow Canadian 'brickers - have had good success with canadasmotorcycle.ca (Quebec) - reasonable pricing,good service.