Shabon - 10 to 12 nights a month out of your own bed or 10 to 12 nights a month out of any bed? I assume (and hope!) not the latter?
I was one of the aforementioned LH FOs who joined BA last year and then went back to my loco origins. I'm a lot less tired being back at my loco but that's just because I couldn't stand the LH lifestyle of trying to sleep at times my body didn't want to. We're all different and only those that try it can say whether it's for them or not.