Yesterday I had a gene test as part of a project at the University of Leicester looking at migrations to Britain 1000BC-AD1000. The particular investigation is to examine the proportion of Manx males (with Manx surnames - likely to represent male lines going back to AD1000) with Norwegian genes and genes from other ancestral groupings.
The test measures 17 characteristics of the genome, sufficient to show the ethnic tribal origins, but possibly not sufficient to prove common ancestors for individual males with the same surname (genetic services measure up to 70 characteristics which can identify relationships down to the precision of brothers).
As all those with the Killip surname seem likely to have a common male ancestor in the Isle of Man in 14-15th centuries, the results of my test will probably show similar ethnic origins as all Killip men, apart from those from adoptive or wrong-side-of-the-sheets relationships.
I will post the results to this forum when they come through - they are likely to show whether most killip paternal lines are from Viking or Gaelic stock.