Hey ladies

I really want to add an obi belt to my wardrobe, but I'm wondering - can they be worn only with dresses or in other ways as well - with tops and skirts, to belt cardigans etc.?

I'm also wondering which belt would be easier to wear out of these two belts:
1.Narrow obi belt with ties - http://www.etsy.com/listing/81.....-wrap-belt

2.Narrow 'petal' obi belt - http://www.etsy.com/listing/66.....-wrap-belt

Thanks for helping