I can understand this to a certain extent, but mine isn't embarrassment either. I'm more nervous of all the extra attention people seem to pay to the bag, it almost feels like I have a target on my back that screams to a thief to steal from me. Whenever I leave my local LV, I'm always extra cautious and vigilant. Sometimes I carry a super small purse so I can drop it in the new bag and carry the new bag out like it's mine, that way if the shopping bag is the target the criminal would get a big empty box!!!
I agree, I also get nervous of all the extra attention people seem to pay to the bag but I don’t think it’s “I’m going to steal your bag” I think it’s more “wow she can afford that” or “wow Louis Vuitton such a special purchase” doesn’t necessarily need to be in a negative way but I actually thing that what you said about leaving your local LV with the new bag and putting your purse inside and then just carry the shopping bag and the empty box is much better