I got my eGo threaded BDC in the mail yesterday. I ordered from Nhaler on the 25th with standard shipping. It's been working like a champ. Good flavor. No leaking, gurgling, or dry hits. Very easy to fill but, like pbusardo said, it's a little frustrating that you can't fill them all the way. All in all, no big deal. If it keeps on performing this way, it will easily become my go-to device.
Just a word of caution to those ordering the Vivi style from Nhaler: The unit reviewed in pbusardo's video came in a box with two spare heads. It was sent to him from the manufacturer. He mentioned Nhaler as a vendor that carried them. Nhaler is selling only the clearo unit with one installed head. They've updated the site to make that very clear now, but some people ordered right when the video came out assuming it would be the exact same thing pbusardo unboxed in his video and they were a bit surprised when they received just the clearo, no presentation box, no spare heads. The images of the clearo on the site still show it with the box, though. I don't really care about a box. Just more junk to throw away, but pictures really should match what you receive or it should be made clear what will be different.
The heads are available in a box of 5 for $13 ($2.60 per head before shipping). A little more than some other clearo heads, but when you see how intricate they are when psuardo dismantles them, it's hardly surprising.