Well, I went and did it; I ordered a copy of Paul Matthews's The Paper Jacket today. I figure I'm going to find out what this paper patching stuff is all about, once I get back to the States.
I'm going to be shooting PPCBos in an NEF Buffalo Classic .45-70, on top of Holy Black. I was shooting grease grooved CBs with Holy Black through it in the past. Since I'm already set up to do that, the investment for paper patching should be minimal. I figure that .45 boolits are big enough so that even someone as ham-handed as me should be able to work with them. If I'm successful, I'll try it on a couple of smaller bore rifles, too.
Wish me luck!