HWD/Foxmoth
Thanks for your input.
So what would be experienced by the unfortunate pilot of the gust affected aircraft would be a strong pitch down to regain trimmed IAS (and thus TAS), rather than a stall.
But it might feel like a stall.
The only instance of this type of incident that I have heard of (and it was second hand) was a DC8 hit by windshear from a CB, so it's no doubt pretty unlikely anyway.