I've read that a majority of people IN Sand Diego prefer to blue/sand look to the brown/gold look--I don't know the splits, but from what I understand it was about 5-10% more. I believe that the Padres organization has done a study on this and have found that the minority that like the brown shirts are a very vocal minority, which is why they haven't completely changed the uniforms.
The home jerseys above look great, but as a kid I always hated the Taco Bell style, I was pumped when they went to a tradition blue/orange/white set. In the above example, they need a better away jersey. The brown one with the interlocking SD looks good as an alternate.