jrkong, I don't think I've thanked you for sharing all your info with us! This is actually pretty nice-- usually it's just we end users spitballin' instead of actually knowing what design goals were, etc.
As an update: yep, these suckers work PERFECTLY for sleeping in. They go deep enough to allow you to lay on your side (I had to change to the small tips, but they worked great after that), and the smoother sound signature suits relaxation really well (versus the ER-4PT I've been using recently).
I think these are going to fill a lot of empty niches in the IEM market, and as such I think they're going to be pretty successful... I plan on using these as my out-and-about daily driver IEMs, and I can definitely see others doing the same. I had recommended to a few of my friends that they pick up a pair during the KS campaign, and I now think they have really missed out by not doing so, as I can't imagine them ever needing more than what this IEM offers.
OT: jrkong, I've been intrigued by the Auris project since they had the KS teaser about it a while back. I'll be setting a calendar alert for September 4th ;). Anything else you can share on these? There isn't a dedicated Auris thread yet, so this is probably going to be the best place to post, unless you (or whomever) starts an Auris thread.