I love this! I frequently annotate books I am reading, and often have to use eraser for correcting typos etc. With (non-erasable) pens, downside is that I can

I love this! I frequently annotate books I am reading, and often have to use eraser for correcting typos etc. With (non-erasable) pens, downside is that I cannot erase. With pencils, downside is that I can erase anytime. Almost never do I have a need to erase something two days after writing. Would be buying shortly.