A few notes after a week of the Carriere:
The upper bars of the Carriere are really comfortable themselves. They are really smooth, and cause no irritation at all.
The LLHA doesn't cause any lisp, and it didn't take too long to get pretty used to. Sometimes I can kinda forget it's there and not notice it. However, food gets stuck between it and my teeth really easily, and it's really hard to get it out sometimes.
I can already see small gaps that have opened up in front of my upper canines. They are only about the width of a sheet of paper, but it makes me curious to see how big it gets by my next appointment, and by the time I get the Carriere removed (if my upper incisors don't move at all, which I would guess they will some, the gap on the right will have to get to be as wide as half a tooth in order for that side to get to a class 1 bite).
Also, this is from a few weeks back but forgot to mention it and it's kind of funny. This is about when I got the brackets removed from my canines and first premolars (the week before I got the Carriere), and so I just had the four brackets on my upper incisors and nothing else. Later that night, my wife said that when I got home she could tell something looked different but wasn't sure what. She did recall that I was supposed to get more stuff added at some point, so she just figured the top braces were added. Yeah, she tends not to notice small details. And, I suppose, it's verification that she doesn't secretly have any sort of interest in braces (though I was basically already 99.99% sure of that.)