Seems omnipresence confllicts with omnipotence: If you're omnipresent you're everywhere by definition and if you're omnipresent you don't have to be anywhere you don't want to be. Believers often claim that hell is separation from God, that also seems to conflict with omnipresence. It's like they tacked on 'omnipresent' because they wanted to stack on more omni-attributes.
I'm not anti-Christian. I'm anti-stupid.