Hello Hank45,
Most, if not all bullet lubes are somewhat sticky and if the paper patch is applied on top of it then IMO it's doubtful if the entire patch will separate from the bullet on firing it. That could lead to aerodynamic drag during the bullets flight. 

PP bullets were all designed with smooth sides, no grease grooves as it was felt that the grooves themselves caused drag. That may not matter if your hunting in the woods and your longest shot may be hardly 100 years, but, if you into Long Range target shooting you will be disappointed I believe.

PP bullets have a lube cookie separated by two cardboard wads placed below the bullet. Finding an un-grooved bullet mould for PP bullets may present some difficulty, as the last time I looked neither Lyman or Lee made them. But there are custom makers that will make what design you want.

Lubing a patch after it has been applied is also likely to prevent patch separation. However, opinions differ so never take every statement at face value, experiment if you wish. I have a couple of Paul Mathews book including the one on PP bullets, I don't agree with much he wrote as I have found some of his methods didn't work for me, but they did for him. Go figure 

Please don't think I am  trying put you off, nothing could be further from the truth. I shot PP bullets for nearly 40 years and I shot every week. Not one bullet was less than .450" others were .577" More importantly I loved every minute of it.

I think Paul Matthews was paper patching looking for a way to shoot dead soft lead 45/70 bullets for deer hunting.

Interesting in one of his books are the letters from powder companies and experts warning him his loads were too hot.

Great reads be carefull with advice.

Boats