When you speak about pouch, do you mean this one:
http://www.thepouch.com/sony-prs-500.html
if yes, do you like it?
In the end of the day for home use I am satisfied with the original sony case. I only worry if I have to travel somewhere, to protect the screen. Even though it will be in my backpack, some accidental press from something on my backpack may give reader's screen unwanted pressure. I have have seen the above topic and I am very curious about this pouch now.