"In KRP vs. KR, if the pawn is a rook pawn, it's almost always a draw. You can even add another rook pawn and it's still a draw in most cases.
I've just found where I read recently on this subject, an absolutely must read article:
http://en.chessbase.com/post/karsten-mueller-understanding-the-vancura-draw "
Can someone more experienced than me, such as a LM or any master please confirm this?
That article us exclusively about the "vancura draw", not KRP (or 2 pawns) vs KR.
I don't see how you arrived at the conclusion "if the pawn is a rook pawn it's almost always a draw, even with another pawn", it certainly wasn't from that article.
http://en.wikibooks.org/wiki/Chess/The_Endgame/Rook_and_Pawn_EndingsThe above is more general (not specifically about one type of drawn game)
It says:
1. Three or More Pawns and Rook vs. Rook:
This situation should *always* be a win for the side that has the pawns and is not terribly difficult to play.
2. Two Pawns and Rook vs. Rook: This scenario *usually* results in a win for the player that's ahead, but in practice can be more challenging to execute.
3. One Pawn and Rook vs. Rook: Situations where one side has only a single pawn are the most complex of all rook and pawn endgames. Unlike the two above scenarios, they are not cut-and-dried, and there are more factors involved, such as the positions of both kings and rooks and the file the pawn is on.