Is it appropriate (as a Catholic) to make the sign of the cross when passing an Eastern Orthodox, Oriental Orthodox or Church of the East church?

It is an old tradition in Catholicism to make the sign of the cross when passing a Catholic church, as a sign of respect to the Eucharist contained in the tabernacle, located within the Church. I am wondering: 1. Do Eastern Orthodox, Oriental Orthodox, and Church of the East also have tabernacles in their churches? 2. If they do, is it appropriate for a Catholic to make the sign of the cross when passing these churches?