yes. all Classic commands are in Studio (which has a few more that classic does not).
i havent done much in Studio but everything i've brought into it runs fine/as expected. BUT, others have experienced graphics-related issues (i'm remembering a recent issue on Discord where draw depths were an issue while they relied on creation order for depth vs manually setting text/sprite depths).
i've also been told that some of the Games Pack games have issues when brought into studio but i honestly can't see how any of the "issues" couldn't be resolved relatively easily.
so, "yes" (and studio doesn't
require Scenes which just generates Code, if you're wondering) but potentially requires a little work to get things "just right".
and, glad to see you again
