At my new job, yes, but I solved the hideous problem by installing Babun, which is a package of a fairly good terminal emulator (mintty), cygwin, package manager, and my beloved zsh :-) I can use vim, grep, ls, find, sed, shell scripts, and much more. Like on Linux but without the possiblity to choose fluxbox as window manager.
Yes
I wish I had more upvotes to give this answer!
I would suspect most are.. I doubt they read HN though
I'm using it at work and it's a pain. Don't go down that path unless you're writing windows applications. For anything else, use a real OS
I'm using it at work and it's a pleasure.
Use whatever fits your workflow and try not to be put off by comments like this that offer no useful information.