Very rough around the edges. Dialogue works, movement works. Dash effect is pretty cool, but camera moves slower than the character, so you can actually run off-screen.
I see a fellow SAM enjoyer. Dunno if you run it in real-time, but it mangles some words, unfortunately - you have to "tune" and type them more phonetically for it to actually pronounce them properly.
Interesting stuff. Please don't be overreliant on sam - it can get stale pretty quick.