But what if you access DDG as usual but access Google on clicking on back button. You know you need to access Google sometimes. That customization is planned.
Thanks for you feedback.
For me, it is easier to prefix my search string with !g than to hit the back button. Especially if I already navigated a few pages through DDG results.
The back button is also an annoyance when, for example, I had an open tab, wrote a search string into the address bar and hit enter by mistake: I'd want to get back to the page I originally was at, so I hit back, and I get your search engine selection screen.
Isn't that intuitive in that case, I'm afraid.
The idea is good, but... I don't think it'd work well for this kind of thing.