I'd say thinking about your GS while on approach is a bit silly.
All that matters is your IAS and the wind.
On a windy day, if I ve got 40kt on the nose and the surface wind has been passed as 10kt, I know 30kt of HWC is going to disappear at some point. Therefore I fly a bit faster!
Got 10,000 hours now and never had a negative windshear- so it works!
