I've watched plenty of Eddies videos and have seen Evo's sliders first hand and like them. My main concern is how the frame on a jk holds up after a few years with frame mounted sliders... Then clearance is my second concern. This is why I'm considering body mounted.
How many years of abuse would it take to convince you that frame mounted rocker guards are the way to go? You've seen our videos and you should know that before running EVO rocker guards, we were running LOD and before that, Shrockworks - ALL frame mounted. Last I checked, Moby's frame is still holding up just fine after 8 years of what you've seen in our videos.
As far as clearance goes, there's no question that body mounted rocker guards will give you more and it is the reason why I really like the idea of them. Back when I owned a TJ, it's what I ran for it. However, after what I've seen with my own eyes over the last 8 years of the JK being out, I would NOT run body mounted rocker guards. If you play hard, you WILL do damage to your body and I would NOT trust them to recover a Jeep.
So, a TJ's body has think sheet metal?
Yes but it's more than just that. The TJ was A LOT LIGHTER and designed more simply and this allowed you to make effective body mounted rocker guards that tied into the tube a lot better. From experience, I can tell you that the JK is no TJ and it really shouldn't be thought of in the same way. Trust me, if I had any faith in body mounted rocker guards for the JK, I would be running them.