Nice, and additional I tend to like the BW rendering the Zf does.
Same here, and I must say that BW *display* helps to focus on what matters for the final BW rendition. Generally I'm overwhelmed by colour and tend to forget about lines, so for years I shot slides and only used BW for industrial photos or organ photos, where colours are guaranteed to matter very little. Since I went digital, my BW shots were mostly second thoughts (a shame, in HCB's country) and I admired Edward Weston and others like gods with unreachable skills.
For me, the Zf is a game changer, in the sense that BW becomes a real subject. My earlier shooting sprees were generally the style "let's take this lens and get the most out of it', now it sometimes is "let's go BW and get nice shots". Valuating restrictions (see Akira's motto).