Bought it last week, played it about hour and half in a train. Actually, seems like nice little sampler mainly on the go. Some limitations, some compromises, so if you like to work with limitations and this workflow inspires you (like me), go for it. I don't notice 8 bit resolution here, it sounds great.

Just quick mix, I used only 2 samples, 6 patterns, 2 effects recorded directly to pattern, quite messy, not so much variations in drums, no intro, no outro etc.

https://soundcloud.com/xryba/po33-nai-01/s-mH9gk

Thanks.
There is actually option to use different pitch / filter / volume settings on samples in drumslots, settings are recorded directly to pattern, when you change it, you have to rerecord pattern to store these settings. This means you can have different pitch / filter / volume settings in each note of one pattern. It's kind of plus (or minus - if you have rearrange whole pattern if you don't like sound settings of a sample)

Battery life seems to be good. I use rechargeable batteries, haven't really paid attention to how many hours I get out of them, but it seemed like a long time. I went like 3 weeks w/o changing the batteries & I used it quite a bit, almost everyday & sometimes a few hours at a time. It doesn't power off either, it goes into sleep mode. I was actually impressed with the battery life.

from teenage website for metal series:
1 month battery life
2 year standby time

I realised that i enjoy to work with this thing way more than with my SP303...
SP303 for effects and chops, PO33 for main work and sequencing...

btw. backing up memory takes about 3 minutes.

To my computer. It seem like it's just audionoise like backup from old days - Commodore64 games or Korg poly800 or Roland Alpha juno memory. But i didn't try to load recorded data to unit, Still trying to finish my first track and haven't done it yet. Then I can mess with storing/loading memory.