did you ever find a way round this? i'm trying to send invites to an event created on the iPad calendar. you can't add recipients to the event in the calendar and you can't add to event to an email. most frustrating.
Perhaps this can be quite painful, but syncing with Mac/PC (to get the event in iCal/Outlook/Thunderbird/etc.) and then sending out the invite or adding the recipients through your computer is the only way around to this that I know.
I pay for MobileMe, and I think it is pretty good.
However, for a paid service MobileMe is pretty lackluster. You can't create Calendars on iOS. Once you create an event, you can't change the calendar it was in, on iOS. You can't invite people to your calendar events, on iOS. You can't add custom repeats within an iOS device.
There is a whole lot you can't do in iOS for MobileMe that you should be able to do. It is slightly retarded.
I did notice that when a user of Lotus notes (large corporation) sent me a calendar meeting that it allowed me to automatically add it to my calendar schedule...... Sadly though I'm not able to do the same in the IPads calendar ...sure would be nice if I could do invites also .......or forward a schedule