My opinion... Tyvek is for marketers... I have seen failures of tyvek in more than one situation,only sometimes due to faults of the installer.
Fiber cement board is not new, it used to be the old asbestos type where you had to drill holes. Now there are new products and you NEED to read the manufacturers instructions as to how the install goes.
I used a cement fiber board that looks like clapboards on the Corwall church in Cornwall CT 5 years ago. The product had to stay dry before the install. It was then hung from the top of the piece with roofing nails. Worked like a charm when you cut it with some power shears. Prime all cuts and leave a small gap for slight expantion of the pieces.
This stuff still looks like brand new ,paint and all.
I'm not a fan of new things unless they are proven, in this case I think still looking new in 5 years is not so bad.
We used 15lb felt paper as the weather barrier. I remodeled my second house from 1740 and the paper from the remodel done sometime around 1938 was in good shape....so much for marketing....