Absolutely. I used a ton of "sz" when I had a dial-up shell account (and didn't yet know about SLiRP). More recently I've used sz/rz when I've been connected to

Absolutely. I used a ton of "sz" when I had a dial-up shell account (and didn't yet know about SLiRP). More recently I've used sz/rz when I've been connected to a router w/ a serial connection and needed to pull down a file from a remote host. The router had an SSH client so I just connected to a Linux box, downloaded my file, then sz'd it to myself over the SSH connection via serial.