There's not many people/projects/companies that take this approach; so if they're not telling you about doing it, you can safely assume they aren't.
IMHO, it's a nice idea, but it at least doubles your system integration work, and the benefits are mostly hypothetical, unless you're willing and able to dynamically shift your infrastructure between OSes if one of them usually performs better but is susceptible to some DoS that's inbound today.
IMHO, it's a nice idea, but it at least doubles your system integration work, and the benefits are mostly hypothetical, unless you're willing and able to dynamically shift your infrastructure between OSes if one of them usually performs better but is susceptible to some DoS that's inbound today.