According to the programme, Iberia was started in 1905, but not completed until December 1908, Rondes was completed in May 1909, and Gigues in January 1913. They were all premiered separately and not performed together until January 1913, eight years after their inception, which seems to imply that they were thought of as individual pieces until the opportunity came to perform them together. I didn't find last Friday's performing order to be eccentric, but maybe the evening was just a bit too much of a good thing.
I'm a little late to the party but I was impressed with this conductor and I thought the orchestra played well. Of course we need to hear him in other repertoir, but so far I like him a lot and he is a big improvement on recent incumbents - and the orchestra may well become first class.
But only time will tell.