My vehicle blends in and is otherwise-legal — non-compliance encourages me to obey most traffic laws — but I do carry the plate in my passenger seat to display in event of pull-over (my plate is some iteration of "no plate," and I do respect individual officers' safeties [1]).
[1] They have every right to know, when performing a lawful investigation. My plan would be to hold it up while initially stopped (to show intent of identification, my plate is complicated in many ways and must be searched for in a very odd way).