Mellow Green checking in with some information on the manhattan and ameravape technologies. I created an account so I could reply here actually, as I've mainly been a lurker so far. I'm in no way part of the company, but I do have close connections in the Mecca of vaping, and where this company is based, Southern California.
Anyways, concerning the gold contacts wearing out:
Ameravape Technologies offers a lifetime warranty on your manhattan mod. And even more, the shops they sell to will have monthly maintenance contracts, where once a month you can go to the shop you bought your manhattan for maintenance, and if anything is out of place or wearing down, they will fix it for you, including those gold contacts.
Additionally, the Manhattan was in research and development for a year, and they have created a great product because of it. It is specifically designed to handle those extreme subohm builds like .06. It's designed to never get a hot spot or a hot button, and as long as you are using the correct battery, and knowledgeable about subohm building, you'll be fine in terms of a safety standpoint.
It's true they aren't in many shops currently. I believe they only just launched a month or so ago, and their initial run has been selling quickly.
Ameravape Technologies stated a lot of this information themselves actually. They were recently on a vape radio show, and gave a lot of good information on their product.
You can watch the stream at ustream.tv/channel/vape-room-radio
It's the most recent recording.