My girlfriend has no clue how to differentiate my new gear from my older gear. Definitely works in my favor. Only time she notices is if I get something new in the mail and she gets to the mail before me. That's when the questions start!
Yeah, my wife's the same way. I recently got my gold v3 Flip and brought it home, and my wife asked "have you always had that?".....I said "yeeeaaahhhhh......that's the ticket!!" haha....
And I always get my vapemail delivered to my work...that way she can't rip my head off for spending waaay too much money!!