3top, Eurocopter are about to make an intermediate skid available for the 135. 100mm more ground clearance and 150mm wider footprint than the Low Skids. According to the 135 project boss, they weigh less than 4Kgs more than the Low Skids.
We have the high skids fitted due to the fact we also have the belly pod with the camera and Nitesun. Even so, given some of the places we land, I'd still prefer the high skid to protect the tail. High skids also give you a better sloping ground capability.