bryantA bit more than other inks for sure, or you'll get gold flecks in your next ink. It's really not bad, in my opinion. The ink itself (not the flecks) washes out quickly, but the gold gets into all the nooks and crannies. You want want to stop using it though, so just get more pens if you want to use other inks.
bryantPersonally, I like the stormy grey as one of my main inks, so I keep it in a Lamy 2000. The rouge I keep in a Metropolitan just because I use it less. I wouldn't regulate it to a poorer pen just because it's a bit hard to clean... That's like not cooking a certain meal because the pans are harder to clean! It certainly took me an extra couple minutes with just water to clean, but I'd imagine some sort of flush would make it faster.
bryantHaha, probably a bad example; I sometimes do that too.... but still! I barely flushed out a Pilot Metropolitan, and the first page had mild gold flecking if you looked at it right, but it was gone after that.
I'm prone to doing this. lol