No hating here. If you were an idiot, we'd just point it out to you!

But I will sprinkle on your parade a little bit. Drawer handles are designed just for that -- drawers. There is not any thought of weight hanging off the hooked part in the design parameters. I would be concerned that the hooks will not bear the weight adequately over any distance. The vibrations created by roughish roads and higher-pressure tyres, can play havoc with weak links like that.

I truly would suggest some aluminium flat bar of generous thickness (say 1/4") cut and bent to hook shape (bent once only) would be a better proposition. Also, ensure the hooks are longer than on the drawer handles, which I feel are too shallow to be really effective. You really do want total reliability in your pannier set-up.

Other than that, good luck with the shakedown ride.