Yes, I did send them in Monday, and they got them Tuesday, so they hope to get them mailed back by Friday.
They took 13 days from time the got the impressions to time they shipped, and I had them on the 16th day (Saturday). I listened to them for 48 hours and moved them up to rank #1 of all my IEM's, then sent them back.
I'll have a new post today about another set of IEM that I listened to today that beat my SE500's; but they weren't mine, and they aren't for sale yet but they are VERY very close to being released. I got to listen to them at the manufacturer's place here in Colorado Springs (that should be a big hint). I was ordering some custom ear tips for my SE500's and was showing off my Tomahawk and iBasso D1, so they decided to show off a new earphone design to me, to listen to with the Iriver via optical out to the D1.
I can't compare them to the Livewires while they are being tweaked, but I did have my Shure SE500's with me to listen to before and after. Watch for more details in a new thread.