This is funny.
I guess i am lucky cause my wife is into photography too. So we can share lenes or she can use my L lenes.
She suggested me to get 10-22 and 24-105 too. She just bought me a 70-200 F4 IS for my birthday.
You're lucky your wife likes to share. My fiance and I use separate cameras (right now it's mostly because he can't take a good shot with mine, and because if he did get a dslr it would be Nikon). I told him if he got a Rebel he'd be on his own with lenses because I'm very anal about keeping mine clean and pristine.