C++ reference for both LValue and Rvalue without type deduction

I was reading a good tutorial on lvalue/rvalue references. If I've understood correctly when there is type deduction something like T&& can accept both an lvalue and an rvalue.

But is there a way to achieve that without a generic class? I'd like to avoid duplicating all my methods for accepting both lvalues and rvalues. And of course avoid passing big objects by value.