My conclusions on the material is that:
1. ExecSG is a native PPC product.
2. It is not entirely completed because of additions made to it (the mem stuff).
3. The 68k emulation idea was (early ?) abandoned due to it being too slow and unefficient.
When it comes to the browser issue, i must say that i am a bit disapointed, a mozilla build would have been much better.
But then again this could be done later on by others aswell.