Ken,
I think you've captured the fundamental difference between view and
viewpoint quite nicely so, yes, this is reasonable.
I would only add that although the relationship between views and viewpoints
(within a given architectural description) is one-to-one, as noted in the
1471, a view should correspond to only one viewpoint, otherwise it is
considered redundant. A viewpoint, on the other hand, can have more than
one view. This is analogous to the class : object relationship in OO
parlance, but I wouldn't take that analogy too far.
Cheers...
- Jeff E.