udk animation compatibility?

[barakas]

Forgive the ignorance of this question, I have no experience using the UDK. However I'm thinking of getting stuck into it in preparation for release of the RO2 SDK.

Is it possible for me to work on animations for a 'blank' skeletal frame, and then use those animations on the models that come with the RO2 SDK?

Or do animations have to be built specifically for the model its going to be used on.

Also, can 'stock' animations that come with the UDK be easily modified to work with RO2 models, or again do they have to be tied to a specific model?