Yes, i have demo’d the iphone and just about every other PDA/smartphone available. It lacks in function in that it’s three primary objectives of a business pda are email, calendar, web browser are not as easily accessable as that of most full keyboard Blackberry (as far as BB’s go I am NOT a fan of the Pearl, I do not like the Sure-Type keypads) again, IMO.
Demo'd is not used.
What's not accessible about one tap on a screen icon? The email, while currently not push compatible is quite full featured. The calendar works great for me... syncs with my Calendar app on my computer and allows me to add events, ties to my address book. As for the browser, you are joking aren't you? Safari is a full fledged browser, not a mobile phone lite browser like you get on Blackberries. I have yet to find a webpage I could not see in its entirety (minus Flash content) with my iPhone. When some webpages started re-directing iPhones to their mobile webpages, iPhone users filed complaints with their owners... because we don't want a crippled internet experience.
Despite being outnumbered by Blackberries, the iPhone far surpassed Net Applications' browser usage in less than six months of being on the market... it is much easier to use the internet on an iPhone than on any other mobile browsing device.
You seem to have decided the keyboard on the iPhone is not as useable as the Blackberries' keyboards... IMO, nothing could be further from the truth. I can actually type faster on an iPhone than I could on a previous BB I had... and more accurately. The keyboard on the iPhone is contextual... it can change according to what you need to do. The auto-correcting feature takes about a week to get used to but once you have become accustomed to it, you miss it on every other typing experience.