The demos almost look like customs from the back and have the same cable entry, but the business end is more of a tube like on the Shures, as Mike mentioned. I have pasted some pics of a meet where we had the demo kit and you can see some victims trying them out. The trick of getting them in right is to push the foamie all the way onto the stem and then squish it back so that you can see the end of the stem again. Put it in your ear and let the foamie expand. If you leave the foamie down on the end of the stem like with normal universal IEMs, you will not get a true sense of the sound. The foamie needs to be back from the tip. Enjoy. I ended up buying them, as did Grahame and some others, after that meet pictured below.