Well after getting my 70-200 F4 I discovered that it won't work with my Lowepro 200 slingshot. This sucks because I love that bag. I'm looking at the Canon deluxe photo backpack 200EG as a replacement, Anyone have this bag and what are your thoughts? It is getting a 4.5 star review (900 reviews) on Amazon. I also have a almost new slingshot 200 for sale