Yeah I use a pair of lightweight nylon supplex pants in 110* bushwacking/thorns often and am almost perfectly happy, except for two items:
1. The thin nylon pants allow too many needles/thorns to poke my legs. Hence I am thinking soft shell, like Patagonia French Roast or Cloudveil.
2. When sweaty or wet the pants bind really bad and cause me to shortstep a rock hop or technical bit. Hence I am thinking of stretch.
Our trails here are very narrow single track with very nasty thorns, thistles and poisen oak encroaching from shin high to waist level. I call this bushwacking, but it is the normal trail condition.