I find it weird that people are comparing everything to PS2 and FFXI in terms of Windower and plugins. I wouldn't be surprised if SE opens up plugin development in FFXI and find a way to have sanctioned plugins that are user created. On top of that, SE will have learned from their mistakes and will offer up FFXIV in windowed form right off the bat. I just hope they do so without the border so it looks more like fullscreen.
All that aside, I will be playing on both (assuming the game is worth playing), since FFXIV will likely become a family thing (me, wife, daughter). I will likely get another PC for the wife to play on (she is using my gaming laptop right now, and while it runs current games nicely, I have a feeling FFXIV may be a little too much for it... time will tell). My daughter will likely use the PS3 and I will use the old PC (we will see though). We will likely stick to using the controllers though. It has always felt more comfortable to me.
95THF, 95DRG, 90BRD, 94BLM, 95BLU, 90COR - Retired: Nov 2011
Someday soon my friends, this ride will come to and end, and we can't just get in line again.