I also really like the idea of waiting until the reversers are stowed. That's a really neat way of working around the problem. We usually encounter the problem at airports where the initial taxi instructions are given by Tower, not Ground. So I understand their problem as well. It would be very easy to tell us to vacate and contact Ground, but they have more on their plate than that.
Thank you for the references Neptune262. I'll be sure to have a look at those.