DFC et al, we all know that the 6 and 3 roster in the UK is a very different roster, it takes 10 days to do a cycle. There are two periods of 24hrs off during the cycle between the E's and L's, and between the L's and N's. This pattern also involves your first duty being a E duty which mucks up your last rest day.
Personally speaking I would love to see IAA mismanagement try to implement such a work friendly (to an extent) roster. I am sure it is tough to work 6 duties on but almost 4 days off is good recompense, NATS also has a decent safety regulator who isnt in bed with mismanagement and protects the staff and the travelling public from abuses.
The IAA is getting a bargain having a 5 and 3 roster which takes 8 days to complete a cycle compared to a 6 and 3 which takes 10 days.