So I got one of the 222wh models and pleased to report I got a long day shooting out of it. Screen brightness at full, not much sleep time and backing up to an external bus powered RAID drive while shooting. Started at 9am and it ran out at about 8:30pm.
Thing is awesome. Not the 24 hours as advertised but I'm really satisfied with the life I do get from it. Battery life used to be a stressful part of remote location shooting so I'm glad to say goodbye to that. A major plus is also being one battery and one 3 hour charge, no need to continually wake up at night to put all the batteries on charge for the next days shoot.
Thought someone would appreciate the real world experience to take out the gamble with buying.