The best we can do is size up the chances, calculate the risks involved, estimate our ability to deal with them, and then make our plans with confidence. (Henry Ford)
If it's so good then why aren't others doing it? Some use the term virtual - but our practice is built to work this way. We've had to narrow our services accordingly, but for those without a need for their accountant to hold their hand, this works well.
So there's no risk to you, and at minimum you might learn something about how well you keep your data.