I once drove a Ford Fiesta 1.1 courtesy car. Reverse was in the bottom right, and either it had no interlock or the interlock was broken. The sound you get when trying to change from fifth to reverse while looking for a sixth gear at motorway speeds is… even worse than one might imagine.
I've driven four or five Focuses over the years and not had that difficulty. Presumably it's a combination of the driver's height (I'm 5'8½") and seat adjustment? Conversely, when I drove a Honda Civic I found its rear view appallingly bad.