It's awesome outside. Works absolutely fantastic in most situations.
When I have the 35mm on the camera, I tend to think about shots a bit differently than I do when I've got the 18-55mm. The 18-55mm is great for wide shots, and that's what I use it for most of the time. Most of the time in a city situation, I'll use the 35mm. I find it is the perfect focal length. It's just wide enough to capture a good shot of a building if you frame it just right, and long enough to do really effective street photography that keeps you right in the action. The thing I like about it for shots of buildings and architecture is that it really forces you to think about composition and framing. In a tight city environment, you're never going to get all of that building in the frame, so you need to focus on interesting parts and details of it. I think this makes for a cooler shot, and the fact that it makes you think about it will make you a better photographer.
Yes, the 18-55mm is more flexible, but the 35mm frees you up to concentrate on capturing the moment. I love that about this lens.
There is some argument about 35mm vs 50mm, but I think I prefer the 35mm on a DX camera. The DX format is a 1.5x crop sensor, so with a 35mm you're getting a lens that is roughly a 52.5mm. That is a fantastic focal length. I use the crap out of my 50mm lens on my old Vivitar film SLR. The 50mm gives you about a 75mm focal length which, while still useful, is a bit long in my opinion. I just went through my EXIF data when trying to decide on which, found I used the 30-40mm focal length a lot, and settled on the 35mm.