80 of the 274 confirmed 11-13 haplotypes I have in the 11-13 Combo spreadsheet are deep Clade R tested and verified to be L21+. We also have at least one person in every box (sub-group) of the 11-13 Combo project that has deep clade tested and come out L21+.
However, I have found two 11-13 haplotypes in the Ireland DNA project that are U152+ and NOT L21.
There is also a very unusual case in the O'Shea/Shay/Shea project where two people with a close GD that appear to be 11-13 people have two different SNP test results. One is L21+ and the other is U106+. The U106+ guy is being retested so we'll find out if that is a lab error or a truly strange coincidence.
I believe the odds are very high that if you are R1b1b2 predicted and are 406s1=11 and 617=13 you are L21+, but it is not 100% certain as is demonstrated by the findings.
Unless you have a known brother/cousin, etc. who has been deep clade R tested already, I recommend it. It is the only way to be sure.
We do have two people who have recently ordered deep clade tests. Thank you.
If you are uncertain if you should do deep clade R testing, please ask questions.
I think I've stated this before, but it is my general opinion that everyone in R1b1b2 (R-M269) should test out to 67 STR markers. R1b1b2 people from Europe are just too closely related to discern between without 67 markers. R1b1b2 looks more like a bush than a tree and too many small branches seem to cross (drift) from their original source branches.
As far as a priority between deep clade testing and testing out to 67 markers, my recommendation is do the 67 markers first.