Actually, in my experience IT guys are usually easy to switch. If they've ever used a Cisco router, switch or whatever then they'll be pleasantly surprised when you tell them OS X runs on UNIX which you can access via terminal. Worked for me and a friend more than once.That's worth like 150 right there. Good job.
I have also told my parents that regardless of what they say, they are getting a mac for their next computer.
my entire family -4 and 2 friends so six