There is no point to either.
Membership is too dysfunctional/selfish to affect change.
If I still worked at CX (fortunately I escaped to greener pastures), I would quit the waste of time HKAOA, and simply do what suited me. If I wanted to work on a G then I would, if I wanted to call in sick I would. The simple fact is that no one apart from YOU will spare a second thought for you. You have one life so I would suggest do as you please.
The chest thumping that goes on here about 'not flying with so and so because they're a scab' is all hot air.
Just do whatever you like and make your own life enjoyable!