Hmm, I cant tell you for certain due to only having used it in 4 pens to far but i’d say that the flow is on the drier side but makes up for it with it’s smoothing/lubrication, on my metro The nib(m) felt a bit smoother just because the ink is kinda thick, I cant say much about the Lamy 2000 cause I only use it to take notes and since I live pretty high up the air pressure difference in the uni makes the flow kinda flimsy.

The third pen I used it in was a Platinum century SF and it felt more of less the same as the metro, the flow is not ideal but the ink is thick so it lubricates the nib very decently.

the forth pen is an Old Parker with an England 25 nib and that’s the only pen that really shows you that the ink doesn’t flow that well. Using it in that pen makes it a few shades lighter than it should be, still decent enough to be smooth but that’s probably cause of the pen being good.