I'd just be happy if I didn't bang my elbow or shoulder on the bloody dispenser as I perform my duties or in the act of standing... I have an ample pair of cheeks, there are occasions when I'm practically sitting on the sanny bin tucked down the side, especially in portapotties and recently refurbished pub toilets. There was one that was so tight a squeeze that I couldn't open the door without standing on the seat and then stepping through the gap...

They should be positioned so that when seated, all you need do is reach out with your hand from your lap, and tug gently.

LTS