I did that with handbags.
I have some that I am so glad I never bought auth - way too much money to find out - this is not my jam.
I do want the auth Rolex 36 Candy Pink OP. But I am willing to happily wait for it to not be as popular or until an AD calls me (Although I need to go put my name in). I received a 31mm OP in silver that showed me (purchased as a trial to see if I like 31 or if I want 36) from a reptime user - I like it a lot but if I am going to spend the money I want a larger size so hence why I am excited to get the rep 36 to confirm my wants.
I do have a couple of the quartz Cartier ballon bleu - and I love them, but wouldn't spend that for the real -
The 1921 I think will be a little too big and it does sing dressy - but that is why I am thinking of either a pink strap or a barenia strap to dress it down a little, but I may find its just not my deal.