PPT Template... Company or others?

Powerpoint came up tonight while at home during the dark Minnesota winter evenings. The wife asked me:

"Is it wrong to suggest a Powerpoint presentation at work should be using the company template?"

I've actually been thinking about that a lot lately, as Powerpoint presentations are just so nice for facilitating a meeting. Is it alright to deviate from the proscribed company template at work? Does it depend on the presentation?

Nothing against the OptumInsight template, it's very nicely crafted. But having seen the same template used for a 1.5+ years, it's wearing thin. Combine that with the fact that Microsoft has some oh-so-pretty templates ready to go and prepacked in Powerpoint, I've got admit, I've started deviating.