I was reading on interview on the net of some old school scratch/juggling DJ in the early '90's whose favorite cart was the 680SL, which was a stereohedron or microridge cart. According to popular belief, that should wear the vinyl down a lot, but I'm not so sure. If it's running at 2 grams and is distributing the wear to a larger area, then it should be less. What would bother me more is that the Nightclubs want 3-3.5 grams tracking force and whatever damage it does to the records while scratching is total, not just to a certain area of the grooves. Ellipticals hold the groove better on playback, but worse when backcueing or scratching. So, you might want to look into Whitelabels or 44-G's. Since you already have Orts in their Pro line, you might as well just get some scratch needles in the line that are spherical and call it a day. It will also be a good backup in case you're stuck mixing on strait arms, which you should never use an elliptical needle on.