It took me more than "a few weeks" to get comfortable with it. In fact, I actively advised people to avoid it until the last beta and the GM.
As of the last beta and GM, either iOS suddenly changed drastically for the better, or my perception finally adapted.
Either way, now the old version is frustrating, lacking essential features to accomplish common intents. I believe it's my acceptance or comprehension of the new flow that shifted.
FWIW, I work with several major versions in the course of my day, from 4.x through 7.x.
