A lot of interest lately, I think they're great.
Tried tubeless, kept getting leaks, could have been my bad fitting job.
Had tubes and Tannus in for over 300mls now, majority off road.
They are firm even at 20-22psi, so you can go 16-18 easily.
I find 18 is the sweet spot on mine with the current tyres, that may change in wInter when I put some more aggressive boots on. They'e still stable in corners and take any hits, roots and rocks, not had a puncture

You can fit yourself, its relatively easy, just be methodical and take your time and have "good" levers.
I'm 27.5 x 2.6, Tannus are 2.5 but dont let that put you off, I spoke to Tannus direct before buying and they confirmed they'll be fine in a 2.6, they are

£29.99 each, but they don't need any maintenance, just bought another two for my wife's E-cube.