IMO only, 3X is not enough for 2 bags, and may not be enough for 1 at madison, esp if an SA gets the sense that one is simply shopping around and is not going to be a regular client. I do not put that much store in reports of people getting bags at 1X or 2X
I average 5X plus in between accepted bag offers. While I do reject bag offers, my spend is not uncommon, nor would I say that i am a top spender in relative terms. I do have friends in a VIP category who are not constrained by bag limits and who do not really calculate spend this way. YMMV