I just can't play with light strings.
Well I can if I had to but blah blah blah.
My tone is heavy strings plucked hard. I just seem to lose 'my tone' when I play lightly with light strings.
As has been mentioned early in this thread, they don't seem to bounce and I find it much harder work to play fast without digging in. I can still dig in and rattle them off the frets if needed, softly for a mellow tone, or just normally (for me).
I dare say I could adjust over time but heavy strings played hard give me a real solid tone, and as they say, if it ain't broke.