@Terre You've confirmed my concern about matting. I've, also, been concerned Patti might get a collar caught on something the way she jumps around.
I, too, worry more about her dashing out in the street and getting hit by a car. We live on 11-acreages with other acreages around us and our house sits a ways back from the street. On the occasions Patti has gotten out she's been very interested in exploring new smells, which for some reason leads her towards the street.
The first thing people want to do is chase after her which begins a game of chase. I've educated my family to Stand Still, Don't Chase. My trick is to walk away and call her, as she typically gets a treat when I say - Patti Come and will follow me. Takes some coaching. Need to work on this more.
We keep a pretty close eye on her but she's like a Ghost and gets to places before we know it. One day, we her heard scratching from inside a closet. Daughter had opened the door to get something.
I had a Schnauzer who got away and was gone for days. Maybe a week. One day she reappeared at the front door. Barked to come and was sicker-than-a-dog. Don't know where she'd been or what she got go into. She survived.
I guess I can hope if Patti gets lost, she'll go to someone whose smart enough to take her to a Vet to check for a microchip. I wish that microchip had a GPS finder on it.