I'm no expert, but the DB9 is a micro-compact, the DB9FS is a full size, so this should fit in between the two...just my thoughts on it. (I had the same question so was looking into it)
Now what would absolutely give me the have to have it Pandora's golden heebeejeebees, is if this turns out to be a DB 10mm pistol. Doesn't look long enough in the slide, but a guy can dream, can't he?
Coming soon!