I'm rooted, but stock rom and custom recovery mode. I was able to install the OTA update directly without the need to sideload. I don't know much about rooting but glad I can update with OTA but doubt there will be many more updates for the Nexus 10. I'm glad this 2 year old tablet is working better than ever. The sound is as good as current flagship Android phones also, imo.
edit: custom recovery...