It depends on the personal situation and your force shift patterns you will return to, personally, I have a family and I know me being at work 7 days/ nights in a row on the npas pattern will not go down well at all at home!
There are some good points raised on the Polka forum in the rosters topic... Such as the current resourcing being so frugal there is insufficient cover for everyone to take their leave, and reverting to 7 days on duty goes against all advice on staff health and well being.