I havn't , and do have some sympathy with the hypothesis . Builders are likely to be opportunistic and as Thorpe and Williams-Thorpe suggest most British stone circles appear to have been constructed from local materials either quarried or glacially transported but there is plenty evidence to show that worldwide in non glaciated areas ,much bigger stones than the bluestones were moved great distances and uphill . In Britain the possibility of glaciated erratics makes it more difficult to prove that transport except in in cases where there was no glaciation e.g. Old Keig .