Single or multi user for roamers?

We have a number of users that work shifts and access their e-mail from one of several “group” PCs running Notes under Windows 2000. They can log on to any of these PCs, not necessarily the same one each time, therefore, we will be eventually moving these users to “roaming users”. We are running Domino 6.0 on iSeries server and clients at 5.0.9 – we will be upgrading both shortly to 6.0.1.

What would be your suggestion, single-user or multi-user installations on the PCs?

If roaming users replicate each time they start Notes, wouldn’t a single-user installation keep one folder/directory, keep things in one spot, cleaner?

Thanks.