Second to pitching the sidekick. They're okay for keeping your gun from getting scratched in the range bag, but not much else.
Don't get me wrong I'm not attacking you for your answer, just asking what the difference is between a $100 holster and a $20 holster
It's the difference between an off-the-rack suit and a tailored suit.
Ok, for reference, I carry a double-stack 1911. I have both an uncle Mike's size five Sidekick, and a Milt Sparks Watch-Six horsehide.
The Sparks holster rides lower. This means that when I sit down, the hammer isn't jabbing me in the ribs. The Sparks holster cants forward about 10 degrees, which puts the bulk of the grip in line with the bulk of my torso. This prevents the butt of the pistol from poking out the back of my shirt. The Sparks holster uses two snapping belt loops, one up front, and one in back. The holster absolutely will not move from its position on my belt. The angle never changes, the height never changes, and I don't have to worry about the whole thing flopping out of my belt when I sit down.
With my Sparks holster, I can unload the gun, put it in position, and do jumping jacks without the gun shifting in its holster even a sixteenth of an inch. With the Sidekick, don't try that over a hard floor.
With a quality holster like this, I can just almost conceal under an undershirt. Trade it for an XL t-shirt in a dark color, or just throw on a hawaiian/camp shirt, and it's completely invisible.