In diabetics, DKA is preceded by hyperglycemia. Meaning, a CGM would tell you earlier that you are at risk for DKA than a CKM, a CKM would only tell you after you got it. Hence grahar64 is absolutely correct that as far as we know now, this provides no benefit to people at risk of DKA that a CGM does not already provide. I'm sure there will be some benefits but its really not clear at this point.