I have the Ipad 1 and I have always protected it. I carry it in a portfolio style case, usually with some additional protection, such as a "Built" slip case, and even put it into my "BUILT" neoprene laptop backbpack. But, I have rarely sat anywhere and used it "naked".
Expecting to do a lot more typing, and hoping to benefit from a hard keyboard, I chose the Zaggmate aluminum keyboard case/cover, which looks like small Powerbook when in use, and, the iPad sits face down in the keyboard, like a closed netbook, when not in use. Carrying it in a "BUILT" neoprene slip case, protects the whole ensemble when not in use, and, using the iPad with the keyboard at a table, I don't expect too many problems. But, MOST of the time, I will still be using the iPad by itself, so, I will be sitting somewhere with a "naked" iPad.
I have never dropped my iPad, and supposed I should be more confident of what will happen to it while it is in my hands, whether in public or at home. But, for some reason, I have this feeling of dread.
I see the following options:
1) Stick the keyboard and iPad together, drop them in a slip case, and hope for the best when using the iPad naked. That way I always have the keyboard in case I can actually sit at a table and get some extensive work done.
2) Keep the iPad in its portfolio, put the keyboard in a slip case, carry them both separately in my backpack, and only bring them together as needed. In this case, I am forfeiting the value of the keyboard as a case, but keeping everything safely wrapped.
3) Leave the keyboard at home only pull it out as needed.
Assuming you would bother to use a keyboard, what would YOU do?