Can 2 users on one pc use 2 OC clients the same time?

We have two different users on a windows 7 pc and each user has a separate OC client installed.
Should it be possible to run and synch both of them the same time (both users being logged in to the pc)?

Client version:

If they are both logged in and operating: yes (I am not sure how this shall work in normal Windows, but that was not your question).