definitely. i applaud jobs for having the balls to come up with this product. throughout the years apple has taken some risks, & this is one of them. i think it will pay off. by forcing this small form factor, he is raising the bar & forcing other manufacturers to compete with it, as he did with the iphone. hell i have a friend who, upon discovering the existence of the ipad, was extremely disappointed & said he hated what it was going to be. yet he ordered one anyways & now that he has it he's in love with it. i reminded him of his comments last month. :-x
when the iphone first came out people didn't like the touch screen & many still don't. many reviewers were concerned that the touch screen would be a deterrent. but it proved wildly successful & shortly thereafter many manufacturers started to include touch screens in their phones (even though their phones still had tons of buttons, which i find... funny.)
tablet PCs in general are niche products. not everyone uses them, & the ones that do are usually niche segments like the ones you mentioned above. -though i gotta say, a mechanic would get plenty of grease on that screen. :-x