I'm not a rod-builder, and purchased all three of my Yomogi models from U.S. builders, who obtained the blanks from Ijuin. You should really try casting one! Better yet, fish one!
When I obtained my first Yomogi (7.5-ft, 4 wt), I was uneasy about what I'd gone and done... did I just buy another fly rod?? Out of the box, the wiggle test didn't convince me I had made a good purchase. Sort of the same when I lawn cast it. Then I fished the rod, and experienced the "wow" factor. Never thought I'd be regularly using this little rod on a western river flowing thousands of cfs, but that's what I do! One qualification is that cutting and using a tree branch would probably be better than using a Yomogi to fish with split shot on the leader.
I began fly fishing ~50 years ago, couldn't afford cane, so started on old glass. Then, we all experienced the near extinction of glass rods, so I fished graphite. I am very happy I recently purchased and fished a Yomogi. If someone has no knowledge of what is meant by "parabolic" action in a fly rod, put one of these in their hands!
All the best,