It's only 1.3" wide at the ambi slide stop. The gun itself is the standard 1" wide. It will also have the factory option for a rail and without a rail, beavertail or without one, button or the superior lever mag release. Backstraps wills will also be available with the micro model.
10 round flush fit mags are standard and is what the micro version of the P365, M&P Shield Plus, Glock 43 with (Shield Arms 9 rounder), and Glock 26. The Hellcat and Gx4 only has one extra round at 11.
I am not a fan of the P365 or how Sig moves as a company. A the only reason why the P365 is so popular is because it's modular therefore very customizable and has a lot of aftermarket support. If the price of the SFP9CC is similar, it has a good trigger (which I assume it will have), and the aftermarket support catches up to the P365, it will put a huge dent in Sigs sales IMHO. HK is certainly putting more planning into the SFP9CC to insure it doesn't suffer the same fate that the P320 and P365 suffered from out of the gate.... I've been waiting a while for this to finally be released. We've been discussing this on the HK for for over a year now.