I've shot the Encore pistol since they were first introduced.....I love it.
The Muzzle loader barrels for that gun are very nice indeed. If you're looking for that "multi purpose" type gun...it's the king of production models.
Obviously, to convert it to a pistol, you'd need to register it as a pistol frame and add it to your permit. I'd suggest buying it as a pistol and converting it to a rifle.
The only drawback is the trigger/sear system. It's not possible to get the light trigger that's desireable for a varmint caliber. While trigger work can be done, anything less than 3 1/2 to 4 lbs is not possible as the hammer will "push off" if reduced too far. VERY DANGEROUS.
Also, be advised ...do not expect to add any hammer extensions to the Encore...the hammer is cast and will break from the inertia.. hammer extensions are also noted for causing misfires by adding weight to the hammer thereby affecting the force delivered to the firing pin.
RG