For the blue cheese dressing: Combine the sour cream, mayonnaise, lemon juice, Dijon, honey, Worcestershire, garlic, 1/2 teaspoon salt, 1/4 teaspoon pepper and 1/4 cup of the crumbled blue cheese in the bowl of a food processor. Process until smooth. Stir in the chives and the remaining 1/2 cup blue cheese. Adjust the seasoning to taste with salt and pepper. Hold in the refrigerator until ready to serve.
For the salad: Toss the romaine and quinoa with 2 tablespoons of the dressing in a serving bowl. Arrange the bacon, eggs, tomatoes, avocados and radishes in even sections over the top of the lettuce. Drizzle with more dressing and serve immediately.