As far as practicing with weak side... Yes, I have, but unfortunately not enough. That is now going to change.
I am going to concentrate on the shooting more heavily than mag/speed loading at first. I don't have any speed loaders for the revolvers I have now, but that will change eventually. I have been more of a semi auo pistol fella for the past 5-6 years, so they & their accessories like mags have been my focus. Now , as I find myself in this position, I have to re-think my perspective on such things.
G'luck on your improving yourself also! Please share if ya think of anything.