http://outlier.cc/ indeed does have some slim-fitting pants. I have the Climbers and they are the best pants I've ever owned, because they look good, feel good, and work in the city and on the trail. They were my only pair of pants for nine days while traveling around the city and hiking/camping in Oregon. However, they cost a pretty penny and because they are softshell, they run hot when you really get going in the sun in them. Rolling them up doesn't help since the slim fit will seal in the heat and really cook the eggs...
I bought a pair of Marmot Rockstar pants which are more of a thinner softshell with a straight leg cut. I've yet to test them out in the heat. I've tried the Arc'teryx Ramparts and they are too baggy. Marmot Matthews look like they can be a winner though. Good luck. Let us skinny boys know what you find!