The sugar content in the “Barista” edition is exactly the same as their ordinary version. Total calorie content is 59kcal/100mL versus the regular version which is 46kcal/100mL.
The difference is they add dipotassium phosphate to prevent separating when the milk hits the hot coffee.
By talking about “Low enough to stay in Ketosis” you are practicing the techniques discussed in TFA perfectly. Almost makes it sound like this special edition is lower in sugar, when it’s in fact the same sugar and higher calorie.