I bought this lens last year it stays on my camera most of the time. it's a good walkabout and travel lens. I also replaced the standard HB-18 lens hood with an HB-27(hood for the 28-100) because I find the HB-18 too big and cast's a shadow when you use the camera's pop-up flash. The HB-27 is also a bayonet mount but only half as deep as the HB-18 and doesn't cast a shadow with the pop-up flash. Also,since the HB-27 is not angled out so much, I'm thinking of just wrapping around a piece of black craft foam on it, secured by rubber bands, if I really need a deeper hood in very bright situations.
I know I already spent a lot words about the lens hood because all the other posters have already given all the nice things about this lens.