mkl...since you already have 2 35cm Birkins, I will strongly advise the the 25cm lizzie. In chocolate, it will be a great casual exotic bag.
I used my ombre lizzie KP as a day bag while shopping, running daily errands, casual dinners with family. I was surprised at how durable lizzie is. It required less babying than ostrich & croc.
While 25cm may appear too small in comparison to the 35cm, I have seen ladies of various shapes, sizes & proportions with it and it is simply divine. If you should get it, I am confident the bag will grow on you. And as with the persistence and determination of any bag lover, even if the bag is too small for daily bag contents & necessities, we will find ways to overcome that by using another bag.
Go for it, girl!!
You got that right.
(Off topic) Ombre lizard KP is lovely. I became quite a KP fan lately.