Since you asked, yeah, I took the plunge. I still have my laptop, but I never use it. The iPad ends up doing everything I need it to do 99% of the time. That 1% of the time I need to burn a disc or manage an Excel spreadsheet or do heavy photo editing, I can wait a couple of hours and just use my desktop. That's what I would be doing anyway, even if I didn't have an iPad since I prefer to do intensive stuff on a desktop.
I've found that most everything you need to do can be done on the iPad with one app or another, and the times it can't do it are so few and far between that it isn't worth lugging around the capability for the rare instances.
I should note, I have the keyboard stand. That is a must have. Without that, I would feel very differently about the product since i'm not wild about typing on conductive screen.
It's only my second Apple product though, and I'll be happy to jump ship if the RIM Playbook is genuinely better (though their app selection truly sucks). I'll go to an android tablet as well if i like that. I just know I'm not going back to laptop/netbook, and that my desktop is here to stay.