But it looks like you need tools (Allen key) to loosen and tighten. That’s inconvenient compared to the screw holder on the Tak tube holders, especially when you want to slide the OTA to adjust balance.
I would attach the arrangement to a D dovetail, which could be slid for balancing by loosening its clamp knobs enough.
Tele Vue clamshells are the best. They screw down, but have a loosening key top bolt, so OTA securing is there, but grip can be loosened safely for sliding an OTA. I use them on my TV refractors happily.