[pdftex] Simple pdfcprot.sty vs. include protcode.tex

[Alexandru Scorpan]

What are the differences between using
	\usepackage[activate]{pdfcprot.sty}
versus using
	\input{protcode.tex}
	\setprotcode\font
	{\it \setprotcode \font}
	{\bf \setprotcode \font}
	{\bf \it \setprotcode \font}
	\pdfprotrudechars=2
?
If relevant, I am especially interested in differences when combined 
with the mathpazo package (Palatino fonts), in a 600-page document.

Alex