u can even earn more with POS than in DMDv2
Yes, but only on the condition that you open the wallet 24/7. Before there were enough 3-4 days in month.
That's why I believe it is important to get an "official" version of the RasPi wallet, I don't want to let my PC run 24/7, but one or a few RasPi is perfectly fine for me.
I know dbradford is compiling 0.13 for RasPi at the moment, and I will test that, but I would feel better if the dev team could confirm that the wallet is safe.