thanks to Voltronic for the tip, I am a Savior Clamp convert. No going back.
Here's my Savior clamp at Tedeschi Trucks / Wang Theatre Boston, clamped to the chair leg (11th row) with a Manfrotto articulating arm and a Matthews baby extension. Gets me to something higher than head-height, which is higher than they usually allow anyway.
Very clever setup!
Welcome aboard Team Savior Clamp! One of us! One of us!
Very well done indeed! I've yet to need to clamp to someone else's seat. Also I'm 100% on team Savior Clamp, my experience is that it is far more versatile than the Super Clamp