I backed 3Doodler on kickstarter and now have it in hand. Not without problems of its own
I also ordered a SwissPen in October 2013. More that 3 months later, no pen, no refund, and the company is emerging as a big scam.
Comments and (Comments) on some of those laudatory SwissPen previews now show many others got taken in.
What is most concerning to me is that Paypal really enabled this scam. By sending lots of "Sorry, we had a delay" and "your pen has shipped, I'll get you a tracking number" messages -- in my case these messages from swiss-3Dprint.com were sent through paypal's own dispute resolution center -- the seller manages to put even the concerned buyer on hold until after paypal's dispute resolution option has expired.