>>4462455 (OP)
I use C1, been using it since v10.
I was previously using Lr and decided to try out other options, then stayed with C1 for the massively more flexible color editor and mask workflow.
At some point an acquaintance was doing tethered work using Lr and, out of curiosity, I took some time to compare Lr's and C1's tethering capabilities.
It wasn't even a competition, I really can't imagine what Lr was doing to be that slow but C1 was three to four times as fast to show a new picture after it was shot, plus it offered the option to control the camera settings in real time and had a live view window.
I believe Lr has improved over the years, and I liked C1 better when the HDR tool only had a "Highlights" and a "Shadows" sliders instead of the four White/Highlights/Shadows/Blacks it has now, which it has copied from Lr, but C1 has also improved in terms of performance, masking tools, face editing features, what have you.
If only the engineers at Panasonic hadn't made it impossible to tether the S1 with a raw converter, C1 would have everything I need (but I can still shot tethered thanks to C1's hot folders or however they're called, only I have to pass through Panasonic's own tethering software).
>>4465161
I have a catalog to which I add pictures taken a few at a time and that don't need much organization, like if I'm trying out something or taking two pictures of the moon.
Every other project/shoot/session/job gets its new, very own session.