I took a nice ride in Ohio one time, from Marietta up to Woodsfield, on Rt 26, early one Sunday morning, no traffic, fog just burning off. Then my riding mate crashed his cbr600, I was on my SV650, they took him to hospital in Wheeling, his harm got broken pretty bad, I saw it my rear view, he didn't slide like has bike, that was rideable afterward. he tumbled or rolled, don't know which is better to describe. I'm not sure what caused him to go down, I was in lead, he was following a hundred yards behind.
luckily, first car to come by, within moments, was a guy on local EMT, ambulance was there within a couple minutes, initially, he was freeking out wanted his helmet off, but I waited, let the ambulance guys take care of that.
My tires were down to threads, I holed up in Wheeling a couple days waiting for tires