LR Baggs is sending me a nylon voiced Lyric mic pickup to experiment with in ukulele. You can learn more about that here
http://www.lrbaggs.com/pickups/lyric-acoustic-guitar-microphone. The reason I think this is a better fit is because it’s a PZM or boundary mic so it doesn’t capture reflection. This is even more important in a smaller chamber. It has phase cancellation and a compression on the low end that helps prevent feedback too. From what I have heard in guitar gives a better mic pickup sound than anything on the market. It would need some tweaking for ukulele and it won’t be as easy to install as the Misi, but for this type of system for ukulele I think it’s the most promising.