Just a few thoughts.

in the past I was using a filofax to implement GTD and simply ran into capacity problems. The number of projects and lists were to many - too many pages to carry, to much notes to browse when I was receiving a call and needed a specific information. So I needed to have my Project/WaitingOn/NextAction Lists, my Reference information, and my 43folders in just one place - preferrably integrated.

Then I thought of an online system, and found the sourceforge.net-project which actually has been the blueprint for iCommit - if you wanna have a system on your own webserver, their newest update really is the best you can get. I originally wanted the same - a system on my own server, with a few changes to the sourceforge.net verison (and the database design...). But then friends and colleagues asked me to provide a version for them - and they didn't have the skills to load php or didn't have a webserver at all. Here we are...

Nowadays, using the online/remote system I only carrying a small notebook and a pen with me to store my ideas (I even have a second one in my car). Obviously - and latest during review - I would then transfer them into iCommit.

Now, going for a business trip, I typically print the days with "Print & Take a day" to carry my Calendar Items and the Reminders with me (yes - a layout suiting fitting in my filofax would be optimal). Meeting specific people, I would probably print the "waiting ons" for that person (->Find function, select type "waiting on", press print button) to be prepared. Projects I wanna discuss I also would take a print of with me.

I even store contact data in iCommit (as list). From time to time I would print that list to have my contacts with me (yet again, the printing could be improved here).

I experienced that people understand that you cannot always carry all your information with you - but, today they can rely on me that I would respond quick and/or predictable once I am back to the system. As to myself, having all data at least "written down" (empty head) I feel great relexation and I use flights more for the creativity part than for meeting preparation. Due to my empty head now I do remember most information anyway - and trust my gut.

And compared to the filofax implementation my office days grew in terms of efficiency , since an electronic system allows me to find information quicker (iCommit does search the descriptions, lists, notes, ... only attachment content is excluded today).

Besides: I do believe that within 12 months we will have devices with internet access-to-go everywhere (eg satellite??).

As outlined to Merl iCommit will very soon have - a help function including Tips - an email integration - my biggest pain is the gap between two systems... - a feedback mechanism (forum?) in order to respond to upcoming ideas

Have fun.