Wolf,
Those vids aren't real clear plus I have the old style Timbuk2 buckle.
At least they got me started. Way better than nothing.

After 20 minutes in front of the mirror I have my own style and was able to let the bag down to take it off and raise it in the cam before cinching it and flipping it behind me. It helps to adjust the amount of hang correctly for using the bag like a purse. To remove just flip the cam open and it drops into place on your hip. Made it much easier to pull some strap through the cam for retightening the shoulder strap and to open the bag while wearing it.

For me it pays to take it slow, get it right and then apply the chest strap just tight enough to keep things from flopping.
Glad I'm a man.

Thanks for the links.
bill