Cut tomatoes in half horizontally. Over a bowl lined with a sieve, seed tomatoes, catching and reserving juice. Cut each tomato half in two. Puree tomato, cucumber, red onion, and shallot. Stir in reserved fresh tomato juice, canned juice, oil, vinegar, and chipotle. Stir in Shrimp, beans, and avocado. Stir in salt;chill 3 hours to marry flavors. Per Order: Ladle 1-1/2 cups into a serving bowl. Garnish with tortilla chips and cilantro.