OK I'm not pointing fingers, I'll just describe my issue and you can draw your own conclusions.
My battery was draining fast while in standby, and when I picked up my phone after it had sat for a long period of time, I could feel it was warm, as if I had been playing a video game on it for 15 minutes or so.
I saw a post here that said to install amoseyan tweaks, so I downloaded them, made a backup and flashed them. When my phone finished rebooting, everything came back up normal, but after 30 seconds or so it would completely reboot, all the way back to the moto logo.
I quickly restored my backup, and when it rebooted...the same thing happened. I watched my phone, and noticed that the instant the notification that Droid Overclock received superuser permissions my phone rebooted. So when my phone came back up I used the 30 seconds to uninstall Droid Overclock.
Now my phone runs well, and my battery is back to normal, 12-14 hours use and I'm still on 40%.
To answer your questions, I had my phone on ULV 1.15, the exact same settings I ran my phone on for at least 3 months without issue.