If BK's dna wasn't a match to the dna on the sheath, we would know by now. This would be priority number one for the defense.AT said BK's mouth swab is his DNA, obviously, but in regards to the DNA on the sheath, in the first hearing on the DNA she said it could be some distant relative or cousin of BK's which is exactly why her experts were saying that the defense needed access to the IGG and details of how it was created. From the very beginning the defense has been talking about the mis-identification of BK as the contributor of the DNA on the sheath and that has never changed.
Having access to the IGG and the details of how it was created has nothing to do with the dna match on the sheath. Challenging the investigative technique of IGG is not in any way saying that BK is not the contributor of the dna on the sheath.
JMO