Not for a standard ketogenic diet, but possibly for variations of keto that involve carb cycling.
A standard keto diet typically requires less than 50 g of carbohydrates daily. You get 70-80% of your calories from fat, 10-20% from protein, and only 5-10% from carbohydrates. Based on these guidelines, regular intake of Ka'Chava would likely contribute too much protein and carbs and not enough fat.
Some people take a cyclical keto approach, which involves following a keto diet for 5-6 days, followed by 1-2 days of higher carb consumption. These “refeeding” days are meant to replenish depleted glucose reserves. Consumption of a Ka’Chava shake would be appropriate during this time.