Missing sync: the only vendor that uses the iPhone sync conduit

How does Markspace do this?

I haven't seen any other vendor able to get at iPhone data via the conduit:

The Missing Sync for iPhone - Mac Version - Notes

... Transfer notes from your iPhone into Bare Bones Yojimbo, Microsoft Entourage or the included Mark/Space Notebook to search or copy and paste content easily...

If they can get across the conduit, could they sync an iPhone task application with iCal tasks?