If a chainsaw was invented today, it would be banned. They are lethal.
Admitedly, I haven't used an electric one, but treat petrol ones with the utmost respect, including kevlar trousers, eye protection, hard hat etc etc. if you have ever seen a cut from a chainsaw, you will know what I men.
As a seasoned chainsaw user, I never ever operate without the full safety gear.
Just once it saved my life.
I was standing in the middle of the crown of a fallen tree, intending to trim-off branches before I pulled them away. I reached above me to remove some twigs that were 'in my way' and the saw kicked-back, slicing-through my face-guard before the safety-brake kicked-in and stopped the chain. Had I not been wearing the face-guard the chain would have sliced my face (and, no doubt, my brain).
Yes, my action was wrong, but I was saved from disaster by my protective gear.
Location: The Burrow, N53:48:02 W1:48:57, The Tin Tent - EGBS, EGBO
I agree about the safety gear - absolutely essential. Any Insurance Company worth its money wouldn't pay out the full whack if you were negligent and lack of safety gear would be deemed negligent. My Christmas prezzie or two I really like: a coffee mug with vanilla coffee, cinnamon sticks, little grater and mug. The other is a copy of "Little Gems" by Gervaise Phinn - priceless!