They show a switch for me even when I search in English.
With google, I sometimes wish I had an easy switch like that when the terms are also available in English as currently this makes their results useless.
!ddgde is indeed a bit long, but as most of my searches are not local, I can live with it ;)
I've been using ddg as a default engine and wasn't aware of this. (also !ddgde is a lot more to type than !g)