Here is a post that will suprise the people that know me, I really don't think resi work should require arc flash PPE. You won't see a self sustaining arc in a residential system, if I was a resi guy, I would wear class 00 rubber gloves and 100% cotton clothing.
But no electrician should ever, ever, wear meltable fabrics alone or in blends, even a small arc can create enough heat to melt those fabrics into your skin which is very painful to remove. I had to have some polyester cut out of my skin once, nothing to do with an arc flash, polyester filled pillows and candles, not really a forum appropriate story, but anyways it really hurt to have that removed.