I remember doing that ski traverse with Eric Larsen and finding some sections spicy in ski boots and crampons. I went back a couple of years later in summer and went up the west ridge and to the south side (right) and scrambled up some class 4 sections to near the top where it intersected with the main route about a 100 feet or so from the summit. I then went down the main route and hiked out to Lupine Meadows trailhead to meet some buddies. The south side is doable, but pick your route carefully to stay away from chossy class 5 terrain. I think it might be easier going up the south side than down it.