I've used worm drive saws, all of them have been left blade, and sidewinders that have the blade on the right and and few with the blade on the left. I own one worm drive and one sidewinder. My sidewinder is right bladed and presents some difficulty seeing the cut, but it is lighter and easier to hold when no saw horses or bench is available. I bet that my worm drive, a 15 year old Skill, is 5 pounds heavier than my Mak sidewinder. Cuttiing 2x stock one at a time, I use the sidewinder. That said, when I gang cut the worm drive is all I use, and when I cut without a saw horse or bench with the worm drive I let the weight of the saw make the cut, so I'm only using my strength to guide it.