On the whole, Pane Bianco was worth the trip. I highly recommend that you get there via the brand-spanking-new Phoenix Light Rail (Campbell & Central Ave stop)!
Amazing fresh bread from a glorious oven.I arrived just before 2PM and they had just changed the market sandwich ($10- yikes!) I chose the no-mayo tuna. Good tasting and moist, but not great. For an $8 sandwich, I'd have liked a bit more tuna.
The picnic table seating outdoors next to the street and the railroad tracks - really not so great in the middle of a warm afternoon.
After savoring my lunch, I did go to Lux and was extremely happy to cool down with an iced espresso. The ice and the caffeine picked me up I before heading back to a conference in downtown Phoenix.