I had that same issue so, whilst it cost more, I actually got a second pro subscription of TD. I then use the sharing functionality and can easily skip between my work and home lists. The issue is then on portable devices, so for these I use the TD iPhone/iPad app and the 2Do app pointing to the different lists. It works and allows me to have slight different set-up for work and home.
I do this quite a bit but use the tag function. I put the person's first name as a tag and then use the status field to show that I have delegated a task to them.
You can then set up saved searches to get outstanding tasks.