Our project group has run OWM through the paces in tests with the demo version. Conclusions:

1) Compared with other 32-bit cartographic applications, it's impressive.

2) However, it's not a program that we would consider using. Just like CC3+, Dundjinni, MapForge etc., we consider the software to be obsolete. Our PCs all have 32 to 64 GB memory and have been running 64-bit operating systems for more than a decade. OWM, like the other programs I mentioned, allows us to use only 4GB of that memory and also denies us the use of many other advantages of the operating system. This would have been a great entry 15 years ago. We'll skip it.