They have high mounted trunions so they can mount the rifle barrel on the top which makes loading/extracting the rifle cartridge a little easier. Changing the barrels is just a matter of pressing a button on the left side of the action, forends are semi permanently mounted, my skeet barrels have a screw, the combo barrels have no visible means of attaching the forend and is very solid, I haven't figured out how to remove it. with the rifle barrels, scope and cheek rest/ammo pouch it is near nine pounds, I'm guessing the shotgun barrels will run at eight pounds. It has two triggers which makes barrel selection simple which is really important using it as a combo gun. The safety is in the front of the trigger guard and does take a little getting used to but not any harder than a Greener safety on my drilling or left side safety on my Darne.
It is a very solid gun, like I said the rifle barrel is very accurate, the 22 HP is loaded by S&B with 70gr SP's and should be adequate for deer, I load 55gr Buffalo Arms 55gr .228 bullets for coyotes.
I have a V. Bernardelli Combo gun in 5.6x50R Mag/12ga that is in the seven pound range all up and just as accurate but I find myself grabbing the BRNO most of the time. With the extra barrels it will be the perfect travel gun, I spend months at a time traveling the west hunting coyotes and it will save having to haul a skeet and SC gun for my days relaxing which I do now.