I was a bit slow to hop on mise because it took me while understand it (Likely because I entered thinking of it as a direnv replacement with more features).
It especially makes life behind corporate barbed wires easier for me (YMMV).
Nice to hear this input... My first glance, I didn't really notice that Windows was supported, and it looks like there's support for dotnet as well... so may give it a try in the near future.
My work env is pretty locked down as well... I've mostly relied on just using Deno+TS for shell scripts since it's relatively consistent for me across work and personal environments and the tooling can run from a user install. Though not using it to manage my tooling itself for work projects.
I have replaced manual (and tedious) download binary from Github releases and install workflows. Also switched from pyenv to mise for Python which I feel is an improvement in the experience.
It especially makes life behind corporate barbed wires easier for me (YMMV).