I would avoid ANY fast work, and try not to ride on concrete, if possible. You will wear your horse's legs out. Just replied to a recent post re: Amish auctions, and, if you saw the legs of their SB's and other driving horses after constant work on asphalt-paved roads, you'd reconsider any work on concrete. Their horses are played out by the time they are in their teens bc of the jarring, which I have witnessed for over 25 years.
If your horse slips and goes down to his knees or hocks on even the hardest clay, he'll be bruised but okay. If it happens on concrete you could easily break a knee.
Also, borium on shoes can prevent slippage, but, if on a QH's shoes you are bound to strain their legs bc QH like to plant and slide their feet in a turn.