Some of us been running it for a week and @DroidModderX has created a number of videos on the subject (which a list can be found here). But as I tend to do with many of these releases, I actually like to hear real world reviews. I personally dedicated my Nexus 6 to run the N preview all the way through as it is not by daily driver. So those running it let us know how long, what device(s), whether you dirty flashed/clean flashed, and what you like/dislike. Also let us know what bugs you have encountered, which will probably be many being this is an Alpha build. Warning: For those wanting to try, the previews are not for the faint at heart as it (probably) will break your device. If you are not familiar with adb and how to unlock a bootloader I suggest you stand on the sideline unless until you do. Neither I or this forum will be liable for whatever complications you encounter as a result of this preview. As you have noticed I am not using my daily driver for this but a backup device.