First of all I'd like to thank Franco for his kernel. It is excellent to say the least. I'm currently running nightly #173 and have 1d 6h of time on a single charge with over 2 hours of on screen time (which, for me, is pretty decent). I'd like to point out that the standby time is really good with very few wakelocks. I was using the interactive governor and when looking at the time spent in each state it seemed like it was doing its job well with an appropriate range through the frequencies. I'm also a fan of the OMAP4 gamma interface and think it is a good addition to the kernel. I'm about to flash #175 and hope for similar results and will respond if I encounter any problems. Good work Franco!
edit: #175 was definitely not as battery friendly as #173