Our corporate IT guys haven't gotten approval on the new outlook yet, so I'm stuck with features that feel a decade old. Tempted to install the new preview. Is it usable? Are there big bugs? Any downside to me installing it? They basically gave me a "do so at your own risk" saying that it's a beta and full of huge bugs etc. But I don't usually trust anything they say. Our point IT guy types with his index fingers if that gives you a sense of the people I'm dealing with. Thank you!