I'm an OmniRom user for few weeks now, and the main reason I switched from Omega to Omni for my S3 i9300 was to get rid of Google.
I'm really satisfy of Omni: fast & smooth, Google-free, great community. BUT, cause there is a but, I tried to create an entry into the stock calendar and it asked me to add a Google Cal account... Didn't want to!
So I looked for a solution on xda, and I found a tiny app who creates an offline account to let us add entries into the stock cal : Calendar Manager.
The dev created it for his i9100, but it works fine with i9300 too.
I was wondering if it's possible to integrate his work (with his go) to the future nightlies please? I think I'm not the only one who was bothered by this tiny limitation.