I hope Spencer comes back soon. I really want his double ocarina and I want a custom order of a triple ocarina as well (if he's willing). I think I'm giving a STL double pendant a try next month thanks to your detailed review and this video.
Having types 1 and 4, I would say type 1 is the more practical of the two. Type 4 has potential to be great, but is really maker and instrument dependent. Pulling out my STL Ivy for the first time in ages was weird. It's decent, but kind of misses the mark in some regards. (Finding the finger holes is oof.) Hind nailed it, though, at least with the inline. One side in C, one in F, and about the size of the regular inlines. While I have only played a little with it, it sounds amazing.
I'm a bit disappointed by the STL double max range pendant Ocarina. I have the regular max range pendant Ocarina and am very happy with it (and wish that they used that fingering system for other Ocarinas as well to have more of a selection). However, looks can be deceiving... It looks like at least one chamber is a perfect copy, but it's actually one hole short (only a dimple) and the other chamber has a different fingering pattern as they couldn't fit the holes on the bottom as the smaller chamber is attached to the ceiling. PS: STL could really attach a fingering chart to every Ocarina and explain a few things, such as why the new max range pendant has an additional hole... They don't even reply when you ask them about it!
