London IBD to Middle East SWF

Hey monkeys, I'm an Analyst 1 at an EB in London and am looking to move to a PE/SWF in my second year as an Analyst. My goal is basically to accumulate as much capital as I can when I'm young so I can start my own thing. Would be really interested in hearing people's experiences about moving from IBD to a Middle East SWF (preferable ADIA/Mubadala, but any of them). Do you think its better to get a year's experience of PE in London first to hedge myself if I ever want to come back to finance in London? Info on comp/working hours at these funds and the recruitment process would be so helpful for me. Thank you!