I would deffently have one on my bike if I had the money. I would consider it cheep insurance. plus if you have power jets on your carbs you could ajust on the fly to all air changes and elevation. Have the bike dynoed with the EGT on and see where the bike makes it's best power. Then you can keep you bike diled in from their.... Not like you have to look at it every second your are riding.
JMO Thow