I got a DSTwo Plus for Christmas but only started using it this past month. It works fine.
I followed a lot of the drama with the brick scares both here and on the official Supercard forum. I suspect that the brick code in the GW launcher bricks the DSTwo itself (although I have no way to confirm this as I cannot reverse engineer it). There were only two bricked 3DS consoles that I read of, but the Supercard forum is overflowing with people who cannot get their 3DS to read the DSTwo after using the GW launcher.
Since the EOS and GW launcher plugin are completely separate, you can avoid this problem altogether by ignoring the launcher and only copying the EOS files to your SD card. That's what I did and have had no problems at all.