I have some questions,
1- Is it possible that we customize RUP so that have an agile RUP methodology?
2- What is the main diffrence between RUP and agile methodologies like XP? What I see is the Elaboration phase(RUP has but not agiles). Can you mention more?(I don't mean pair programming, or less documentation,...)
3- How can you ignore the elaboration phase from enterprise projects? Don't you think on big projects  refactorying architecture would be very expensive?