So it is obvious that your ISP will be able to detect that you use a VPN and the protocol used. But more specifically, say I connect to the OpenVPN server usa.openvpn.airvpn.com (I made that up as an example), will they be able to see the IP address of this specific server that I'm using?
But if it is setup properly that is all they will see, which is key. Pick a "crowded" server (100-150 users) as this first connection. Then bounce to vpn2 and then to TOR and you are "gone" at a catastrophic degree for traffic analysis.