said by ISurfTooMuch:If you're using a separate router behind the RG, which is grabbing a private IP from the RG and then using another layer of NAT that happens to be set to 10.x.x.x, then you should be fine leaving that alone. In fact, that's what I'm doing.
In fact, you would be wrong if you tried to access the outside world from within any private network that uses 10.x.x.x.