Dan Robbins reports the following route on Leatherman Peak. Check out Dan's climbs by visiting Idaho's Summits
Come in from the West Fork Pahsimeroi trail [(B)(8)(a)] hiking due west toward Leatherman Pass. Between Peak 11,909 and Leatherman, follow the gully up to a cirque at 10,800. From here, either hit the northeast face, or continue up the gully to the ridge at 11,800 and follow the ridge to the top. All the rock on this route is tight and it is a very pleasant route. There is only one short 20-30 foot section of class 3 climbing, which could be bypassed by dropping down off the ridge a little (I'm too lazy to do that though). The face looked doable in several spots to, and probably would have been just as easy. 8 miles, 4,100 feet, took us 8 hours, but my friend bonked and if solo I probably would have finished it in 6 1/2 to 7. See photo and map below.
Photo Copyright: Dan Robbins 2002