I have the HS20 - I will pass on the HS22.
For one, I don’t like throwy lights because most stuff that I use it for is like working or searching stuff 0.5-2m away.
But more importantly - I was able to modify my HS20 - you can’t do that with the HS22. I expect Sofirn to make lights that are completely glued shut with little chance of changing the battery quite soon.