Robert Maxwell wrote:
But I was watching those early season 2 episodes, and I realized Walt was always a scumbag, he was just better at hiding it and "playing nice."
I don't know if "scumbag" is really the right word, but he was always a pretty weak and weasely guy, with a massive inferiority complex that pretty much rules his entire life. The difference is now he actually has some power to do something about it.
But I still suspect in the end, when the cops are coming for him, all that bravado will go out the window and he'll just revert to the same scared, blubbering mess we saw when he thought Gus was going to kill him. Because that's ultimately who he is.