How are you liking the bowed screen? Haven't spent a ton of time with the phone, but it was slightly awkward for me(that said, the power button on my current phone has a major PITA at first, now I like it better then a normal one). I know it isn't severe, I'm wondering if with time it actually ends up being a benefit or if you simply stop noticing it.
Also, how is the battery holding up for you? I noticed you made a few comments about preserving battery life but what I have seen led me to believe that shouldn't be an issue.
I notice the curved screen when I put it on my desk in front of me. When the phone is in my hand, and I'm looking straight at it, I barely notice the curve. It's barely noticeable when I use it. Hard to see, but yeah my hand does feel it especially as the phone is fatter at the base to, so when my fingers go for the menu, it feels slightly raised.
Remember the glass is curved, not the screen. The screen is flat. Otherwise you'd get a distorted image. Compared to my Droid it's more ergonomic overall, but that's also because the size fits my hand better. I can't attribute this to the curved screen because I'd probably have to take a regular 4" SGS phone and compare it to see how flat vs curved works. Honestly, the curvature is so small, I don't think it really bothers me.
Battery life... good question. I don't think it's that great, but that may be because I'm overclocked to 1.2ghz. All I know is I went 4 hours today at school looking at my phone for maybe 3 minutes tops and I went from 93% => 83%.
I'm going to evaluate more because I spent a good chunk of the first 2 days plugged in loading data to my phone. Here's what I can say though. I think my Droid does better in terms of standby simply because I have my 2G/3G toggle app working. It does not work for the Nexus S. But I think it's pretty close (with the Droid probably being worse) when screen is on because I think Moto has the radio ramp up in power a lot and the device gets hot as hell when data is hard to achieve. I have yet to feel my Nexus S get hot.
What worries me is the bad SNR I see. 0-2 bars at home a LOT. Probably 2-3 when I'm not holding the device, but there's a LOT of attenuation when I pick it up. As a result, I'm worried that the radio has to ramp up power for data a lot. I have to study it a lot more heh. I know this phone doesn't get good battery though in general from Anand's reviews, but hopefully custom kernels and ROMs will make it better.