Hi there Retired BA/BY. I was also a standards QFI and also a commercial FI so our background is rather similar. I still maintain that, where physically feasible, the wing down is superior. I have also done instrumented trials on Xwind handling and the results were rather conclusive. The aircraft involved were Nimrod, C130 and PC9. In all cases the wing down was established by at least 100ft so the approach was stabilised in good time before touchdown.