So while the mrs and my daughter were away for the day i was bored and decided to have a look at the stock end can thats sitting about. It was pretty tatty looking so I set about painting it just for something to do really. I keyed it in and used some halfords high temp black metallic stuff which actually ended up looking pretty good.
The exup valve needed a bit of persuasion and once freed and cleaned it was opening and snapping shut like new, so then I wondered what it would be like on the bike (plus getting it hot would properly cure the paint). The PO left cables on the servo so i hooked it all up and ran the diagnostics and it operated fine. Other than diagnostic mode i didnt see it operate once in neutral at revs but i think this is normal (or so ive read)
I thought it didnt sound bad at all, a different tone but no quieter than the scorpion with the baffle in. i took it out and i didnt really notice a drop in performance (although I hadnt ridden it for over a month) Still bored i thought id put the scorpion back on so i could test them back to back...this time i did notice a difference and it seemed to pick up a lot lower down the revs and just pull better all round...
So there you go, in my opinion the slip on wins out, looks better and is a lot lighter!