I have no problems shooting with a dSLR, but I do find the form factor of smaller interchangeable systems not suited to my larger hands.
Although I do shoot some celebrations the majority of my work has been air to air and racetrack, both Indy and Nascar as well as classics and high end car clubs such as Ferrari, Maserati, Bentley and the like.
If I could afford it I would consider moving to Hasselblad digital, but with a required investment around £50k it won’t happen in my future 