I would do the mono zippy wallet and the vernis agenda.
The wallet will get abused a little more (used a lot more) and you will be putting coins and stuff in it, plus receipts and things. I think it is so expensive for the zippy (almost $700 with tax) that I would get one you can keep for many many years that will look really beautiful no matter what you do to it. I don't think the vernis is quite as durable for something like a wallet. Don't get me wrong - it's durable - it's just not as durable.
That said - I think the agenda in the framboise or pomme - is gorgeous! It is also much less expensive (about 1/2 the price of the zippy wallet) - so - if two years down the line, it's gets some color transfer or scratched up a bit - or if the edges darken - you won't be nearly so heartsick to replace it - Much easier to come up with the funds and you may want another pretty color by then.
In the meantime - your mono zippy wallet will still be going strong and look like new.