A potentially helpful AHA I had...
There has been some talk about remembering which way is “up” when unzipping the HLT so as not to run the risk of contents dumping. At first I thought “O.K...I’ll zip to one end and remember to put the zips on top when I hold it vertically to open.” And then I realized...Nature is helping me out. Being right handed, i am always holding with my left and unzipping with my right. So long as my left thumb is tucked into a thumb hold, it doesn’t matter where the zips are, i am holding it right side up according to how I have organized the bag.
And...side note, I love the hand/thumb holds and how your hand becomes the table/lap you may or may not have available when you need whatever is in this ingenious pouch.