Going back to the subject at hand, i think this is a fairly expansive and rather ridiculous question to ask
How do European airlines look at pilots with one of these airlines on their CV's?
Which one, there are thousands?!?! Every HR dept will look at you differently. If you're looking for a justification for throwing your money at a p2f scheme i dont think you'll find it here.
Nevertheless, as someone said above, you'll be in the the highest fare paying passenger on the plane, a fact that i suspect wont go unoticed by an HR bean counter...