I don't understand the appeal of the multi-windows. I use GIMP at home and I often have multiple images open and find the tool windows disappear on me. It's frustrating. What's overrated about the single window interface and what draws you to multi window mode?
I guess the question is whether or not you're using a powerful window manager or not. Most window managers in linux support easy always-on-top and layers, so the multi-window UI really shines.
Ah, this makes sense now :) I haven't tried with a window manager. I'm typically in Windows at home and not always on Linux so I'll have to experiment.
I don't even get how people can claim that there is a big difference anyhow - If we were brutally honest here, Photoshop is really only multi-windowed, too - with the main window maximized in the background and carrying the main menu.