Using the ward spell we get at 14ish and our solo HO, I have been able to reliably take down yellow and orange con mobs in Thundering Steppes, and have occasionally taken down a blue++ group mob. That said, I see us as being at the very least as viable as any other class at soloing. Now, however TS is starting to get green and blue, and I have yet to find another place to test out soloablility at slightly higher levels.