Of course it's okay! I mix designers all the time! BTW I just bought THE most adorable little pink piggy key fob from the Coach boutique the other day! It's sooooooo cute! If you love piggies you MUST check this one out!
I use my Legacy Stripe ponytail scarf on my Damier Speedy 25 and it looks ADORABLE! I also put my Dior Summer Play dice on my damier. It looks great too. When the new fall brass hardware Coach charms come out I think I'm going to get an L and a V for my Speedy, too.
OK, here's pics of it with my Speedy.
I plan on getting a Damier 30... and I have a Coach Legacy ponytail scarf from my other coach.. would it match? XD
I think i read up somewhere that someone did this to their damier.. can I see a pic? :d