Fair point trader.
Having previously worked nights I know how rubbish it makes you feel.
6 in a row would probably not be too bad as a relatively consistent sleep pattern could be established for the week, but if its a night turn followed by a day and a night, a ULR then more night turns then that sounds horrendous.
Funny... The roster pattern they showed at the roadshow didn't seem too bad!! (yes, I know, they're not going to show potential joiners a shower of 5hiht)