I'm thinking of the Shimano A530 pedals for my commuter bike. The reason is that sometimes I have to make a short trip from where I work to a nearby facility and I don't want to get dressed in cycling clothing. Plus occasionally I'd like to use my bike to ride to the nearby store or something.

I have two questions about this pedal though:
1) Is it weighted so that the clipless side rests up? I'll usually be using the clipless side.
2) When clipped into the clipless side does the platform make contact with the shoe, essentially providing more stability like the A520 does?