In Texas, Teflon patching has a following with line shooters.
"They smolder after being shot" They do not smolder after being shot. Most times they are in such good shape they could be used again.
For the most part Teflon patches are shot dry with no lube, though there a few who give the patch a quick shot of what ever the shooter uses for cleaning.
I know one shooter who figured he had put 20,000 shots down his Green Mountain barrel and it was still shooting great when he quit shooting. I have heard that Teflon will build up in the barrel but I have not seen it after using Teflon patches for over 30 years.
Cleaning between shots is needed, especially in low humidity conditions. In some pistol matches I will give the patch a shot of cleaning solution if there are a lot of shots in a limited time so I do not have to clean between shots.
They do have an advantage over lubed patches when it comes to hunting. You can put Teflon patches in bullet boards/ball boards and not have to worry about the lube soaking into the wood, thus drying the patch out.