I really miss the always-on AMOLED of the N9. This approach sounds like it could fit my use case to check clock and notifications quickly.

Besides that, it's really bad that the clock is on the bottom of the lock screen. If you just want to check the clock, you have to fully pull it out of your pocket.

Furthermore, when using a side-swipe to peak to the home/cover screen from an application, the clock is on top. I understand the design decision that the clock moves to the lock screen above, but it's not intuitive to look for the same information at different screen location.