An interesting rifle to look at, and interesting rifle to see fired, but without handling the rifle, don’t know if this is an optimum solution.
I have never owned a double rifle, but have handled a couple. A principal characteristic about a decent double rifle is mega power in a balanced lightweight package. A top break double is quite compact. A bolt gun in the same caliber weighs about the same, the action is longer, but you only have one round in the chamber.
I would assume that a bolt action double rifle would be heavier than the traditional double, because of the weight of the bolt action. Also, feed and extraction have to be carefully engineered into any magazine fed weapon. Just little variations in feed angle, magazine lips, magazine height in weapon, can cause a stoppage; there are lots of variables to control. Feeding two rounds at the same time, well making a reliable system would be quite an achievement.
If I was given one for free, I would most certaintly give it a test drive.