Well what is your lifestyle like? What are your goals for your NF? Do you need an everyday bag year round or is this a special summery bag? They will both patina. I just got a DA and am doing my best to keep it out of sun exposure and to handle it minimally because I like a light patina. But it is not my everyday bag, on the contrary, I plan to carry it pretty minimally. Otherwise it lives in the closet in it's LV bag in an open box so the leather can breathe and no sunlight gets to the vachetta. Princess bag.....hee hee.
You could easily make a DA your main spring and summer bag if you do not mind a honey patina. To see how these bags patina, check out ebay. Some look pretty IMO but others just look kind of grimy. Just watch out for color transfer and maybe keep an organizer in it to protect the light interior and it is really a pretty tough bag.
My workhorse bag is my DE NF and if I had a Mono that is what I would use it for too. If I had a Mono I would let it get the nice honey patina and use it however I wished. So......again, check out ebay to see how the Monos patina and that will give you an idea of what things might look like.
There are going to be some special edition DAs with, I think, pink or blue trim. That could also be an option for you. Maybe someone who knows more about them can comment.
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