Not disagreeing - we use the projected left view as well…
But I’m wondering if this user preference or if this is actually a standard. As far as I can see, ISO 10209:2012 on Technical Product Documentation specifies the first-angle projection but only says:
orthographic representation comprising the arrangement, around the principal view of an object, of some or all of the other five views of that object
Note 1 to entry: With reference to the principal view, the other views are arranged as follows:
— the view from above is placed underneath;
— the view from below is placed above;
— the view from the left is placed on the right; - the view from the right is placed on the left;
— the view from the rear is placed on the left or to the right, as convenient.
FWIW, related discussions: