BTW, I think I remember from someplace that if you search on - or otherwise use or expect - the stereotypes to be separated by a 'comma space' pair, you will fail. EA will consider the space to be the first character of the latter stereotype and act accordingly, something you likely do not want.
Given that users or other software may format or expect lists for readability it is often worth running the stereotype lists through something like a regular expression filter in either or both directions.
Just thought I'd save you a bit of hair pulling when the time came.
David