Ad hominem.
WHAT? How was I attacking anyone personally? It's an established fact: touch DNA is far more sensitive than older DNA testing methods.
Let me know when you've got something, OK? I can wait.
Don't test me, HOTYH. You wouldn't like the result.
The idea that someone besides the DNA owner unwittingly deposited someone elses DNA twice at a murder scene is absurd.
I'm not the one you need to tell that to.
It requires the DNA owner to be innocent, to have an alibi. The probability is really low in comparison to direct transfer, and thats why its an absurd idea.
It might help your argument if we could actually FIND the owner.