ecobin wrote:
Based on your question, you do not have enough experience with your equipment when out shooting in the city or elsewhere - no disrespect intended. I've done it all and usually take one camera, two lenses (500mm prime and either 16-35,, or 24-70mm), no flash, no laptop, no iPad, minimal cleaning equipment (blower, wipes & lens pen). Don't put your equipment and yourself at risk!
Lizzen to this man ! Do what he says and you might actually learn something, and even produce some photographs.