With regards to the sealant, how much of a faff is it to maintain and ride with? I didn't realise until reading into it that you're essentially biking with a
puddle in your tires.
Not sure if it matters, but I suspect when the wheel is turning the sealant will be evenly smeared around the inside of the tyre.
There's certainly no sloshing sensation in use.
In my set-up, there's no sloshing sensation at rest either, presumably the sealant the bike shop used is a bit thicker than some.
The guy in the shop - who has done plenty over the years - told me the stuff he put in mine needs topping up once a year.
I saw some sealant online somewhere that doesn't need topping up at all, although some suggestion it doesn't work as well.
You don't mention carbon dioxide inflators, but it's worth knowing the gas doesn't mix well with most sealants so it's best to use ordinary air to be on the safe side.
Another obvious drawback with any tubeless installation is changing tyres is all but ruled out.
Not a big problem, but I would prefer to be able to put knobblies on for grottiest months of the year.