Perhaps what's more impressive (not at all to take away from the customer service aspect!) is that they could FIND those documents! Maybe for 10 year old scopes, ok, but even WITH Tektronix' assistance I had a hard time tracking down a manual for my 20 year old 2221A.
It's super cool to hear that they're into the customer service even for a sale that might not happen for years, though. Too many companies would just try to capitalize and try to get you to buy a new scope.