Is AsteroidOS usable? Should I get an old smartwatch and install it?

Hi all, I have recently found out that there is a Linux distribution for smartwatches called "AsteroidOS", with community watchfaces and all. They claim that notifications, media control, AOD, nightstand mode, etc. all work for most of the supported models! One feature they state is currently missing is call answering which could maybe be coming soon according to the docs?

It sounds really cool, but all of the supported models aren't available new (meaning I would have to get one used, old batteries, possibility of broken parts, etc.). It seems like the most well-supported model is the Ticwatch Pro 2018/20 (and I think it's also one of the more recent ones) and their wiki says the only feature that are missing is the second low power LCD, which only has "partial" support (they say there is no user interface to use it yet, but it works with CLI)

Should I get a used Ticwatch Pro 2018/20 and install AsteroidOS on it? In my area, used smartwatches are pretty affordable, but I'm a bit worried that I could get a dud unit or an aged battery or something like that. I don't care too much about the health tracking stuff, I am mostly looking forward to notifications, checking the time (being a good watch), and having good battery life (the docs say the Ticwatch Pro 2018/20 can last 3 days without AOD and tilt to wake, but the LTE model has terrible battery life apparently?)