Lefty here, and I love my FX and Vulcan rifles setup with the bolt on the right side. I grasp the pistol grip with the left hand, rifle mounted on my shoulder, and crank that lever back, shooting as quickly as a semi auto. It's smooth, and slick. It works on my Deer rifles as as well, but I have to lift my head to retract the bolt all the way back. My Mauser bolts come waaaaay back, the Savage and Remington's, not as far.
I've right handed PB's, Semi auto's, lever's, bolts, etc. Its not the bolt that's the problem most time, it's the hot brass. Similar story with some auto pistols- and don't get me started on percussion muzzle loaders.
4 years with my dear Uncle Sam made me omni handed with pistols (try to get a left handed holster for a 1911 in 1977) and able to clear a room right handed with a rifle. It's just quirky, something that's a little different. I shot the M-60 in the Nato comp for two years, right handed and left handed, depending on the berm we had to hide behind. My right handed AG shot both handed as well when we rotated- it wasn't a big thing, just what had to be done.
I can share that I teach youth to shoot at 4-H and being able to mirror 4 position for them- facing them head on with dummy rifles or pistols, helps them see proper shooting form quickly. I guess I'm being Mr. Brightside, but its when it's a struggle to do something that I really learn something new....
Would be nice to have a Stag Arms AR though....