Depends on the taper. if you take a swamped barrel and cut off the swamped bit, you have a lighter tapered barrel, for sure!
Joking aside, most swamped barrels taper faster than most tapered barrels available, so might be lighter despite the flare. I have a .45 caliber tapered barrel, 42" long, 15/16" at the breech down to 13/16" at the muzzle. Of course it weighs the same as a 7/8", .45 caliber barrel, but the balance is closer to the breech. It's no lightweight gun, probably 9 pounds in this case.
If there's too much taper with no flare the front sight has to be high and looks goofy to me.