Access to Enterprise Network Drives over VPN

Just purchased a Blackberry Passport and installed the Cisco AnyConnect VPN client so that I can access my enterprise network enviroment. Is there a way to natively access enterprise Windows network file shares while VPN'd in? I looked into the "Blackberry Work Drives" app, but that requires BES 10 which I haven't migrated to yet. I believe in the previous versions, you could access network share via File Manager, but that's not currently available on the Passport, correct? I saw some posts saying you could do it using Blackberry Link, but I'd rather not go that route.
Thanks.

Cisco AnyConnect is available on BBW now, since 16 April, it is a port I believe ..