Definitely worth waiting for reviews, but I'm sure they'll come out soon.
FWIW all mtx will be cosmetics only, with the good news that there's no restrictions on mods changing how you look. Their EULA also disallows any pay-to-win mtx in servers similar to Minecraft.
The lead dev backtracked on paid mods (at least for now), saying he's looking into having quick access to donating instead. I wouldn't say it's anything near Roblox territory.