I was part of Toastmasters for a while. My observation was that the pedagogy is indirect: the premise is that you are thrown into the deep end and start to speak from day 1 and get feedback from others. The problem is, depending on your cohort, you might or might not get useful feedback. Not everyone knows how to help you improve -- they can only supply perceptions. You might get an experienced Toastmaster in the chapter who is also a good teacher, but you also might not.
I found direct pedagogy to be much more useful for me personally. I took an in-person storytelling class and received feedback from an instructor who was also a practitioner. It's much more expensive, but it's still learn-by-doing (had to tell a new story every week for 8 weeks, and classes were 3 hours long each week, and like a workshop, I got real critique (positive and negative) -- so stressful) but I actually learned real technique (stuff like aspects of physical presence, using hooks, different forms of narrative arcs for different genres, etc.) The difference for me was professional feedback, and that difference was appreciable.
I found direct pedagogy to be much more useful for me personally. I took an in-person storytelling class and received feedback from an instructor who was also a practitioner. It's much more expensive, but it's still learn-by-doing (had to tell a new story every week for 8 weeks, and classes were 3 hours long each week, and like a workshop, I got real critique (positive and negative) -- so stressful) but I actually learned real technique (stuff like aspects of physical presence, using hooks, different forms of narrative arcs for different genres, etc.) The difference for me was professional feedback, and that difference was appreciable.