I held off on the update due to the Killswitch issues you mentioned. I run it on my media server along with Peerblock whenever downloading stuff.
No need to, just set your firewall to block uTorrent (or whatever) on private connections and ok on public. Set the VPN network as public, home network as private. The second the VPN disconnects it'll kill the torrent app connection and stop it from running off your regular IP.