In reply to NineWillRule (msg # 5):
Roaming Shadow:
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, as well as effects that augment an unarmed strike.
Please note, the bold portion was done for my emphasis. The feat allows you to treat a single natural weapon, basically allowing you to use that single natural attack as part of a flury of blows, or using it to preform functions normally requiring the use of a monk weapon.
This effect doesn't specify it allows the monk to use all natural attacks, only one. The SRD also points out that this allows the weapon to be used as 'PART' of a fury of blows, but does not increase the number of attacks the monk gets. If, with this feat, a monk gets 4 attacks in a normal flurry of blows, she could use one with her knee, one with her foot, one with her natural weapon and one with her shuriken. All of these attacks can do the monk unarmed strike damage except the one where the shuriken was being thrown. In theory, if the natural weapon to begin with has a greater damage, it would be able to do the greater damage. (but not both)
The feat wouldn't seem to do that much for a catfolk monk right off the bat? They could do the same amount of damage, with or without their claws, so I am uncertain the significant advantage this is suppose to open up?
In theory, a catfolk could use one claw to do their unarmed strike damage, but they could do the same amount of damage with their knee if they so choose. (bludgeoning damage though) trying to use two weapon fighting or multi-attack, the feat only would affect (as defined above) only applies to one natural weapon's attacks, so you would only get the boost to one of the attacks (and any iterative attacks using that same weapon) so you would have been better off using a Flurry of blows, which would have allowed the use of it for all the attacks.
I suppose the most significant impact would be for some race which has some kind of special damage it produces, poison, disease, etc. of which HP damage is normally far less significant.