Although some Paleolithic European mtDNA could have been HV and some have suspected certain samples of being HV,
none have been proven to be. I also find it very unlikely that Kurdish HV is Cro-Magnon in origin, even if we were to grant HV as being around in Europe since the Paleolithic. HV is definitely most common in the Middle East and seems to have a better correlation with Y-DNA J than Y-DNA I. I tend to agree that European U5 is probably the best representative of Paleolithic European mtDNA... in fact, if anything correlates with Y-DNA I, it is U5, or more precisely, a large subset of U5 combined with a small subset of U4 and maybe a subset of H and/or HV.
I recall that there was some controversy as to whether or not the Y-DNA Haplogroup I predicted from Kurdish STRs was
actually Haplogroup I. The U5 in Kurds may help confirm that (although even there we aren't guaranteed that it's a back-migration without additional analysis... after all, we also find U5 in Turks and apparently Hazara). Also, this sample size was only 20, and we should be weary of reading much of anything into finding an individual or two in a haplogroup.