That assessment is pretty much correct. I'm afraid it comes down to budgets. We have the skills to create the photos and some graphics but not the site itself.
In our office we do have a fairly recent suite of adobe products including DW, hence the questions. Ideally we would like to use DW because we have it.
We liked the african site because it seems so simple and it has a great impact on the viewer. We have looked at some Wordpress themes but they are
slower loading and invariably limited to 4 or 5 slides so a bit disappointing if you want to show of several hundred.
Enjoy your weekend,
A