When it comes to Y-DNA we know that R and Q are brother haplogroups (both descended from P) and both were probably present among the Ancient North Eurasians (ANE). R*, R1 and then R1a and R1b were all present in prehistoric Russia and Eastern Europe.
By contrast, we don't have any R1b or R1a from areas to the south of Caucasus in prehistoric times.
Autosomal CHG admixture in the Steppe was likely mediated by women (likely bridge exchanges etc.).
It is very unlikely that PIE language was spread by women because it was a very patriarchal culture:
https://www.youtube.com/watch?v=ErXa5PyHj4I#t=4m23s
Hence PIE Armenian origin is unlikely because Indo-European Y-DNA lineages did not come from there.