S/R shaver for six months, started with dominant hand and then slowly swapped certain strokes to non dominant. First was the pass from sideburns over cheek to jowl (test pass). Then under neck, moveing on to under the nose passing over lip, now getting the hang of over the chin. I noticed that if I emulate the dominant on the non dominant side on one particular stroke, then the angle of blade and how I look over my hand/arm by angling my head makes more sense. It is starting to become a bit more natural now, all part of the fun IMHO.