In fact, the only part that is completely unchanged is the 360-degree lens module included in the twin-edition set.
There's no way around this, due to the modular design, but it's certainly a shortcoming.
The included mounting bracket is compatible with the GoPro ecosystem and features the usual two-pronged mounting system.
GoPro's image stabilization is slightly better when you push both to the absolute limit, but, well, most of us aren't going to be shooting on a roller coaster at sunset after eight cups of coffee, so that's mostly a wash.
The resolution is impressive, though, so maybe it could be used for a landscape shot every now and then.
With stunning speed and reliability, the is and it is almost always going to be the best bang for the buck.