FTM is exclusivly for soloing, or, for XP cap removing.
lol
They are really good if you run them in their proper way... Think more along the lines of a superbard rather than as a fighter, and a thief, and a mage. Use spells to improve combat to insane levels of power (Tenser's Transformation is HORRENDOUSLY evil here), and use backstab to the best of its abilities. Toss in a few Sunfires since your soloing, and you've got a foe worth running away from.
I haven't tried one out in TOB yet though. I should sometime. After the Blade soloing plans. I can't wait to try one out after working a little bit with Haer'Dallis. Give him Kudane in offhand, and either of his swords in on hand, 3 attacks per round, 4 with Offensive Spin. Toss in spells liberally. :>