| Notharah |
Apologies for necroing this thread, but if anyone else, like myself, is researching this, this'll be the quickest link they'll find on it through searching.
Anyway, I believe the feat Feral Combat Training allows you to use your selected natural weapon as part of a flurry of blows.
"Feral Combat Training (Combat)
You were taught a style of martial arts that relies on the natural weapons from your racial ability or class feature.
Prerequisite: Improved Unarmed Strike, Weapon Focus with selected natural weapon.
Benefit: Choose one of your natural weapons. While using the selected natural weapon, you can apply the effects of feats that have Improved Unarmed Strike as a prerequisite.
Special: If you are a monk, you can use the selected natural weapon with your flurry of blows class feature."
Although it specifies that this works with feats that have IUAS as a prerequisite, the Special clause looks to suggest that you can, in fact, use the chosen natural weapon in a flurry of blows.
It requires 2 feats to get there, but I believe it could work.
Whether it's preferable or worthwhile is an entirely different matter :)