Yeah - Endjinn is my work. Pleased to hear you find it bonkers @analogue01
I literally only looked at the NW granular stuff for the first time yesterday, and I don't think it does granulation live - just files.
The super easy (and great sounding) external for that is grainstretch~
You can do stuff like grain clouds from live input, or grain pitch randomisation easily. It also does up to 16 overlapping grains (in the [p more grains] bit) which sounds awesome for thick chorus style sounds.
Really easy to use. Just bear in mind that a lot of stuff in additional patchers (eg [p grain_settings]) can be used in streaming mode - they are just not hooked up in the streaming example, so copy them into that patch.