Harald I've never tried to do so and I only make use of the owner profile, but perhaps someone else can share their experience with it.
My comment was in response to your earlier questions:
How can this be secure? It seems to me that this being possible would reduce the security of profile isolation.
I was simply pointing out that running and connecting to a secure shell carries the same security implications regardless of host. Whether you're connecting from another machine, or from another profile, any vulnerabilities in the protocol or client/server would be the same. I would argue that exposing SSH diminishes, or potentially diminishes, the security of any host, regardless of platform.