I guess I'm comming a little late to the game, but as someone who has been through almost a dozen guns trying to find the perfect CCW, I'd just like to add my 2 cents.
First off, kuidos for comming out with a pistol design that is both inovative and useful to the general public (as opposed to only the military/LE); it seems that many manufacturers regulate civilian sales to an afterthought. With regards to your pistol, I have two questions:
What kind of magazines does it use? Does the loading mechanism require the use of a propritary magazine, or can it use standard, existing magazines?
Do you have any plans to make a double stack version? This would allow you to have a relatively high capacity while keeping the grip relatively short. In a CCW, the part that is most likely to print is the pistol grip, so keeping that as short as possible would be ideal, and a double stack design allows for this.
FYI, I voted for the longer barreled pistol. When it comes to a CCW, the easiest part to conceal is the front/barrel, and considering that the OAL of the XR9 is only 5" anyway, the loss of velocity is not worth the trade off in concealability. The only way it would make sense is if you're going after the pocket carry crowd, which means you would have to compete with either the P3AT or the Rohrbaugh. In any case, I'm looking forward to seeing the XR9 in production!