HSWL. I suppose that is one definition of a stable approach. I reckon an approach that is on profile and has the speed uniformly bleed from Vref +20 at 500ft back to Vref at the TCH is stable. It results in a more gradual power reduction and pitch change,, it may even be more stable than holding more power to bring it in at Vref, and then bringing the power back more quickly.
If you are holding 15kts for gusts you still have to get rid of that energy somewhere. Where do you lose it? On the ground or drifting around just above it? I would genuinely like to know the answer to that question because I am willing to change the way I do things if I see a better way. Cheers.