Yeah... That was one of my concerns also before hand, I forgot about that.
I didn't think I'd be happy on a chromebook because I made regular use of those missing keys, like the windows key, page up, page down, f11, f12. I thought I needed those keys to prevent too much chording.
But I saw the keyboard switch as an opportunity to remap things so that I stay closer to home row more of the time. Its nice. The old (windows style) key layout was also nice, but adapting was easier than I thought, thanks to the flexibility of most linux apps.