I own two Metcal 13.5MHz ISM bans soldering stations. Both are housed in extruded aluminium cases, and (IIRC) they have a netfilter integrated inside the IEC mains entry.
The silicone cable to the hand piece is a coaxial cable (no surprise), from dismantling a broken one it looked like serious and tighly woven shielding, probably silvered too.
Might be interesing to try my RF probes on the SA to see what RF leaks (or not).
As a soldering iron these things are absolutely brilliant!
Wilko
PA1WBU
