I don;t think to own an ipad is a showoff. Is whether you know how to used it or not.
Personally, I used both. I don;t created presentation using ipad, but instead , I used it to present the powerpoint that I created using a PC.
Why I do that? Simply because to create a full presentation using ipad is a bit hard, but to modify the content is easy. Put it this way, if you need to keep on modifying your presentation even till the last minute, you are either not fully prepared for it or you do a lousy job on it. A good point from fluffy,
"get good batt life,quick on/off on-the-go convenience.no start ups." That is major. THose that do presentation a lot would understand what is mean by time is essential. You need to deliver the fact fast and accurate.

I even used it to access my AutoCad drawing send by my designer, client . I used Ipad for such time because of the fast on-off and normally, minor changes are need to be done which can be done using Ipad and vio-la, is done and I can email the copies to everyone instantly about the it.

Can it replace netbook.. well, IMHO, I think is possible, but again this is very personal. For me, I had completely sell off my notebook, laptop and netbook once I get used to Ipad. Is light, easy and moreover, mobility.

THose that treat it as a gadget of games playing, well, it will always remain as another PSP and NDS and if you one of those, please don;t get Ipad, you are only utilizing hmmm.. say 10% of what it capable of .

If you know what you want to do with it and there are apps that support it, I guess, you will find it amaze.