Several of you have described what are to me very heavy set triggers. The standard hunting trigger on an R8 1.5-2.5lbs - heavier end of that range for rifles sold in the US. Virtually all of my rifles have been tuned to that weight of pull. A typical German or Austrian rifle will fire the set trigger with just a few ounces of pressure once set. Two of my combination guns have set triggers. They obviously employ the push forward design because of double triggers.
I have used them quite a bit, particularly back when I lived in Germany. I learned to not like them very much. Many rifles so equipped tend to have rather poor triggers when the set trigger isn't employed. From a high seat they were fine, but, in my view, an unnecessary complication when stalking. Today, I find them particularly unhelpful with the great primary triggers available on rifles such as the R8.