I’m pretty sure trip reports is what gave Chris the idea for Panels in the first place. 😉
I didn't read all of the responses below but I have an opinion and that's what 'interneting' is for right?
I like the workshop format when there are a lot of people who either need ideas or want to share their ideas. Lotsa things flying around stick where they are most needed. It's brainstorming essentially.
I like the interview format for focus. "We" are distracted folks these days. I love talking to one person about only their ideas and actions. Then I; or whoever is listening, can distill those ideas into either 1) things that are useful to explore further or 2) things to throw away or just don't apply for me.
However; workshop and panel style convey more ideas in a short timeframe. Interviews convey focused ideas in the same timeframe. So I think it comes down to knowing your audience. Do they need and want a wide array of ideas to chew on or do they want directed opinions and advice?
A workshop, in my mind, is a gathering of people with a similar interest who are ready to share their perspective and actively learn from one another. It is likely they already have some experience with the topic, but they are still open to forming ideas and developing new insights. There is an interesting new synergy that emerges when everyone provides input and they learn from one another.
The above is @lidja ‘s definition. Slightly different from yours, but the common thread is a genuine interest in learning from each other: even if there’s an expert leading the workshop, he/she should at least gain insights on what worked well instructionally.
Since your profile mentioned that you are a photographer, would you mind giving me your feedback on this recent workshop idea?