Hi, I also dabble in inharmonic sounds and got two modules for it:
1) Harmonic Shift Oscillator
As you mentioned, it allows you to change the harmonic stride in the range from 0.0 to 4.0. A natural, harmonic sound would have a stride of 1.0. This parameter can even be CV controlled and is a really funky and unique feature of the module. Be aware that you need at least two of those modules to make the kind of experimental intervals as shown in the video you posted.
With the HSO It's pretty easy to generate bass sounds that have a gnarly bass guitar feel to it, by using a slightly inharmonic stride (e.g., 1.05) . As with low piano strings, bass guitar strings have a noticeable inharmonicity due to the stiffness of the strings.
2) Dreadbox Antiphon
This comes with 8 sinus oscillators which you can use to build up complex sounds by mixing them together and adjusting the frequency of each harmonic to your liking. However, you need to tune the range and offset for all 8 oscillators which is really difficult and time consuming and you need some external tuner or spectrum viewer to do that properly.