Has your employer got you AMCT certified?
http://training.apple.com/certification/acmt
Apple Certified Macintosh Technician Certification
Apple Certified Macintosh Technician (ACMT) certification verifies the ability to perform basic troubleshooting and repair of both desktop and portable Macintosh systems, such as iMac and MacBook Pro. ACMT certification exams emphasize identifying and resolving common Mac OS X problems, and using Apple Service and Support products and practices to effectively repair Apple hardware.
Things to consider, size of company, length of time there, sound like an ok boss.
I believe as the post PC age gets older MAC's will increase in business if for no other reason "to run windows"....weird I know. PC companies are confused look at HP was going to dump the consumer biz, an well now Dell most likely will.
Ya, Samsung in starting to make headway along with Asus, but corporate America, I'm not sure they'll buy into it.
Sound like you've learn a lot there.
If they train you and pay to get you certified, well if nothing else, I'm loyal to a fault.
All the Best,
Jed