Yeah, some spinner handles are faster than "spin disks". I tried the Husky Z Wrench next to those. Generally it can be used without ratcheting by shifting the handle (or the same way with a ratchet adapter). The detents, swivels, and knurling on that make it spin well straightened out, then it can be angled like a ratchet's L-handle for the rest. There should be larger ones made for how useful they might be, at least with a spinning swivel on both ends, if not a bit holder, maybe two drive sizes there (I haven't seen them yet), flex handles approximate this otherwise. A spinning T that has a good weight balance is still much faster, because it spins on its own, but with a two handed grip only (some sliding tees also have detents that allow for spinning from the middle and extra leverage from the end).
Well, I like the concept of all of these features or accessories, built in or not. As long as they work well enough to improve a simple handle (rather than require multiple handles, unless those shine by themselves). Speed isn't the only thing, or I'd insist on power tools for that. You know, it may be faster to spin a hex nut with the fingers alone, sometimes at least. I'm leaving the finger spinners on ratchets so whichever handle I grab will work about the same way (the little blue disks work best on fine toothed ones, and can be spun with the side of my thumb). Sometimes these diskies can give the fingers more torque to loosen or tighten something, which is useful with a heavier wrench, and also for positioning the socket onto the nut with one hand. Seems kind of silly though to have become a scavenger hunt, as these can be so cheaply made that they should never be hard to find. Now I've got my eye on an almost empty bottle of baby powder.

It's all about the same thing as far as I'm concerned, and those accessories are freeeeeeeeeeee. Really, it's more a sense of satisfaction to make use of trash as it were (especially if it works better for some reason, you never know).