You can drop a bus on them and they'll bounce back. I had some go flat when I had 3 inches of freezing rain around Christmas 1998 and the still bounced right back.
Lots of them in the air but flake size is dime and penny now. Heavy returns all the way to Clarksville at this point though. Hopefully every bit of it manages to swing through our back yards.
Probably 2-3 inch per hour rates. Don't know how long it can last but I may approach warning criteria. There was 0 sleet here. Just rain/snow then snow.