Its a great idea, 2 tubes means 2 different loads can be used which is a very nice added extra.
Sadly because Kel-Tec makes it what will happen is:
1. The first batch will have problems
2. The 2nd batch will still have problems, just different ones
3. 7 will be ready to ship on the release date
4. Actual production will be apparently handled by 2 dudes in the back of a van or at least the production numbers will seem like it
5. They will run out of a fairly basic part and wont be able to make any for awhile
6. They will announce that production is running at 110%. This will be a lie and/or it means 3 made a day
7. 1 year later they will actually be on the shelves
Kel-Tec makes some really nice products, i really like my pmr30 and p3at, but they totally suck as a company. They cant produce anything, they constantly run out of either parts and have to delay production or extra magazines are hard to get. If they became a subsidary of say Ruger, or Colt, or frankly any other company out there that could handle production they would be hailed as the best company out there but as it is they do a fairly slipshod job. Heck there are still people waiting on Pmr30s and their bullpup rifle.
As for me i wont give the company money anymore, ill just buy it when i see it used.