I'm also a BSE user--same great material as the IS, but about 1/3 the price, and shipping is fast (received mine 3 days after I ordered). No problems installing the BSE's on 4 BBs to date--the first2 were on original Pearls and lasted over 2 years until I retired them recently. They still look great. (I didn't try to remove them, but I suspect the screen and case are pristine.) 2 BSE screen-only covers or a full-body option for about $7-9 shipped for most BB models is a great deal. That's why I didn't opt for the Zagg product.