I got these flatwounds out of curiosity.
Mounted nicely on my P-Bass (Not String-through-body!) and has been in tune ever since I tightened/stretched the string at the tuners. I do like the sounds and the playability. The sound of the strings are somewhat more warm, dark and "woody"-sounding.
If you're looking for a modern fusion/slap/metal sound with clear highs and brilliance, these strings would be a bad choice. However, if you're into Jazz, R&B, Blues - Generally a more old-skool sound - these will more than suffice!
Personally, I'm gonna stick with these strings on the P-Bass. I will however try a higher gauge next time.