Heat the oil in a heavy bottomed saucepot over medium-high heat.
Add the bananas, leeks, onion, celery, carrots, garlic, and chili paste. Season with salt and pepper. Saute until caramelized. Stir in the cumin and cilantro. Deglaze with the orange juice. Pour in the stock, bring to a boil then lower the heat and simmer for 10 minutes.
Puree the soup either with a hand immersion blender or in batches in a food processor. Strain into another pot. Stir in the coconut cream and season to taste.
Garnish with skewered grilled shrimp, chopped chives and a small dollop of sour cream, if desired.