Thomastik Spirocore Solo Double Bass 4/4

I bought these strings to use on my orchestral bass which is a somewhat dark-sounding instrument. The idea is to use solo string tuned down to standard orchestral tuning to replicate the feeling, openness and vibration of the gut strings and voilà, the trick works. Great projection and sustain and easy to play, but boy, the strings have this metallic quality that takes ages to break in and is hard sometimes to blend in with the rest of the section. Other than that, I am quite happy.