Don, I agree the sawtooth wave is no beauty, but bear in mind this was just a quick revival of a 2010 project which now has the added choice of a low latency ugly sound
If you want to play with tuning exploration and the wicki keyboard layout with more beautiful sound there is a nice free synth called 2032, http://dynamictonality.com/2032.htm
'Anchoring' the tuning is necessary when the tuning system has more dimensions than the note layout, which is the case when using meantone (2D) on a piano (1D), or 5 limit just intonation (3D) on a 2D button lattice. However the whole syntonic tuning continuum is 2D, and as such perfectly fits a 2D isomorphic keyboard. I hope that makes sense, it's a complex topic
About the Striso, the main goal is to make a standalone instrument with its own unique sound (which is far from final). I really like to keep it affordable, which for me would mean well below thousand euro. At the same time I want to keep it wood, and no doubt there will be different versions. And since there are many more creative souls I think it is a nice idea to make a more bare bones version of the keyboard available for use in DIY instruments.One of my greater goals is broader use of isomorphic and tuning invariant note layouts.
I know the Dualo, it indeed has many similarities and also an interesting (isomorphic and tuning invariant!) keyboard, and as you say, there is still plenty of room in this world for compact isomorphic keyboards.
Thanks for sharing your thoughts