I would probably focus on SCI Companion as it is the program I would suggest people begin with. The coding will be the same on either, so it would be valuable for people who use either or both...but I think the SCI Companion is the one to focus on.
That makes sense and is the direction I was leaning in. I actually find SCI Companion a more useful program than SCI Studio in a lot of ways.
I don't think the creator of LockerGnome quest will get back to you. He has moved in a different programing direction and doesn't respond to emails about SCI.
Yeah, it's been awhile and no response, so I think I'm out of luck. I could just craft my own game I suppose and that probably would be the intellectually honest thing to do. The problem is that part of me writing the tutorial is also how I'm learning SCI, so there's a bit of a chicken and egg thing there.

What I started doing is building off of the existing SCI Tutorial (on the SCI Studio site) but rewriting large portions of it, adding more examples, and clarfiying what I had found to be confusing aspects. That's how I came across LockerGnome in the first place.
That said, part of what I'm doing is crafting some of my own rooms as well. So it's not like
everything I'm doing is totally stealing. (That sounds suspiciously like a feeble rationalization, doesn't it?)
Nothing I'm going to present is going to be terribly new, I feel, but my hope is that it will be in a wider context; a sort of distillation of various topics that have come up. It would be nice to reduce any entry barriers for people who want to learn SCI. I'm thinking something that's a cross between a tutorial and a reference.