Does this extend to browsers? Is it open to use Firefox or Opera or Chrome as your main personal web browser, or is there a corporate mandate to use Internet Explorer on every desktop within Microsoft?
(I know the OP on wordpress may not read this here, but any other input is welcome)
It does draw some raised eyebrows if you show up at the office with, say, a personal laptop that's a MacBook and a paired iPhone, but it's at the level of good-natured ribbing rather than actual managerial disapproval or job problems. I would usually say "Yes, but I convinced a family member to buy an XBox 360, so my corporate loyalty karma evens out!"
But certainly no one's dropped by my office to ask me to stop using my alternate browser (I tend to separate my usage by my usage patterns. Work stuff on IE, personal stuff on the non-IE browser).