With some minor exceptions Embergen is basically useless, the prime reason is Embergen does not have a real world scaling feature. When you export VDB from embergen and import to Lightwave the VDB is scaled by a multiplier of thousands's even tens of thousands which makes it impossible to apply medium nodes.
On the plus side JangaFX have said there will be a new scaling feature implemented in a imminent release, just hope that us Octane users will get the update.