I did a bit of research and found that it likely impacted the flow rates enough that you really needed a separate filtered water tap and cold water tap and I gave up at that point.
I'm guessing your van probably has lower pressure than mains though so maybe less noticeable. The Brita one was something like 3l/min which was much lower than my tap (something like a third or a quarter, can't remember exactly).
I did a bit of research and found that it likely impacted the flow rates enough that you really needed a separate filtered water tap and cold water tap and I gave up at that point.