ESS Sabre 9018K2M (for now)
Nope. Not at all, actually. You haven't used Dualloc I see. It's not like Velcro at all...
This is Velcro:
This is DualLock:
Both sides look like that. It doesn't grab onto anything and everything like Velcro does, but two pieces of DualLoc will "click" together and actually lock in place VERY securely. Here's the rather heavy R1 amp DualLoc'ed to my DX100:
Trust me, it's not like Velcro at all, and unlike cheap hook & loop Velcro imitations, it doesn't "peel off" either. Go grab some off ebay and try it out yourselves, you'll love it.
Edit: I peeled it off my DX100 after having it on for about a year: Zero residue left.
Edit 2: Grab the "low profile" version and it'll only add about 2mm to the hight of your stack once clicked together.
It's pretty cheap off ebay, so you might as well give it a shot
I can live with that - at least it's a reasonably cheap thing I talked you into!
10 feet of dual lock should be plenty... I'm using a total of about 4 inches for my rig