My very thoughtful hubby bought this for me and I used it all up and the refills he bought too. A few days ago, I went through my scrapbook and discovered that ALL of the pieces that I used this on were completely loose. I immediately dug the runner out and started gluing again. After reading the other reviews, I now know that it will just come undone again. Do not buy this one thinking it will stick forever! I will, however, go and buy the permanent one.
On a positive note, it is a good value (I get mine at Walmart), and the runner has always worked for me. And I would recommend it if you need it to be repositionable.