Can't tell much about the stallion from these, but the mare seems to have a ovely conformation. Isn't she black silver (silver dapple) rather than grey?
I drive both of them. My mare we do country pleasure or western pleasure driving with and my stallion is a speed freak so we do roadster with him. We have not come across anything to out run him yet. He just looks like he flies when he is at a fully extended trot, it seems like his feet never touch the ground. My mare is hilarious you will drive her for about 10 minutes and she will just stop and look around at you with the look of ok time to GET OFF.