I assume using Swift means cross-platform support is tertiary at best?

I have mostly Macs in my workflow so not an issue for me, but its good to have that plainly stated if so.

Being able to edit a long video to pull out different speakers segments automatically or do automatic edits of speaker transitions would be great- I'll give it a try and see what scenarios are best suited for our use cases...

Yes currently its only macOS support.

Long videos with different speakers is a core use case that we are trying to optimize for, please let us know how it goes for you!