I'm actually using it, right now, already. I happened to have a RP2040 board right here I was just writing some micropython for.
I think this is a good way to quick-start with the boards moreso than using the Thonny IDE. It handles the filesystem access perfectly.
As a reminder given the recent polyfill io attack, don't use public CDN hosted JS without also setting SRI attributes [1]. It's a marginal perf benefit because the cache is partitioned by top level domains now and it opens you up to attacks from the CDN owners.
https://github.com/vshymanskyy/ViperIDE/issues/14
As a bonus set CSP headers and a nonce when you can too, but definitely set SRI on any 3p scripts.
[1]: https://developer.mozilla.org/en-US/docs/Web/Security/Subres...