My saw house with a top attached. Folds up. Sort of an inadequate top for many, but the peg board on the wall means everything is handy anyway. I think I got it from Racewerks.
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(I may have introduced many to the folding StableMate/Saw horse idea with a 16" x 48" top almost 20 years ago, BTW.) I like the routered edge on yours Sibhusky.
For portable and foldable tuning bench solutions there's generally a trade off between light/easy and not sturdy vs beefy, heavy and sturdy. Foldable sawhorses can be OK, but when you bolt on a top, they can get tippy, too. Especially when you extend their lengths. Something like a B&D workmate can allow you to clamp in a longer 2x for your clamps.
These kind of solutions also over you a portable work surface year round, including home projects, bike stands and even camping/tailgating/traveling. Storage of the tools and supplies is also part of the mix. Tool box or cubbies are options.
If you have wall space, a hinged or solid tuning shelf is an option.
For portability, sturdiness, versatility & lightweight, I think it's hard to beat the
Tools4Boards Lightning Tuning Stand:
With the extruded rails, you can slide vises to any position needed.
And you could add a shelf to the legs for a shelf, much like bolting to the top of a saw horse.
I can't remember which event, but these were all around at the top of the run at the last Olympics. Rick of T4B supplies the Canadian team, along with others.