Stompbox users: do you think this might be a thing?

http://loknob.com/
 
What this is is a knob-locking device so you can lock settings an amplifiers and stompboxes. Once installed, you have to lift on the knob to turn it, kind of like a childproof pill container but easier. 
 
I will be checking this out in person at the NAMM show, but I thought I'd run it by you guys in advance and see what you think. My own first impression is that it might be very useful for stompbox users, keeping you from accidentally kicking a knob during performance. It might also make the knobs more accessible on a dark stage.
 
Whether it becomes widely-used will depend on how well it works - it's held in place by adhesive, so that's the most obvious potential weakness. They go for $14, but bear in mind that a plain old replacement knob can cost nearly that much, especially the aluminum ones.

I'll grant that there can be an awful lot of settings that need controlling. I can't see buying this for me. I like a certain degree of random fluctuation as I twiddle and listen and twiddle and listen.

I suppose if I was a pro on the road I'd have to get more efficient, but I'm not.

I'm mainly interested in getting the daw to do the trick for me.

I would like to be able to have sonar insert tempo changes when I tap a pedal. That would be useful.

Without that, tap tempo sync is limited to guitar amp sims like TH3 which is useful but not complete. It wouldn't alter vocal delay tempo for example.

I'd love to see sonar become a key tool in my live performance arsenal, but it still has limitations. TH3 is getting there. Sure is fun in the studio.

I keep getting system crashes using TH3 in Sonar. I was pleased to see future support for TH3 because I'm hoping that means these bugs will get sorted out.

System crashes keep me from considering Sonar for live performance.

the best sounds happen,
when you bump the knob by accident.

Don't the knobs get sticky? Especially on a hot day?
 
 

There are several types of shaft.
 
1) Solid, like on Fender USA,
 
2) Split, like in the video which seems to show one with a split on the side,
 
3) and Splined. Two types: 18 (Japan, Europe) and 24 (Only seen24 splines on Gibson).
 
Then there's the metric and the imperial/inch diameters. In my experience only solid shaft potentiomenters come in imperial/inch, typically Fender USA.
 
My worry would be, with all these variables, what happens if the knob turns slightly eccentrically? Will it stay stuck to the pedal?
 
Also, they stand quite high.
 
I liked the Ibanez Tone-Lok pedals. Pity they didn't conform to the Boss footprint.
 

Good points. As I watched the installation demonstration, my first thought was that one should never remove the nut from a potentiometer without opening the case so that the body of the pot can be grasped while applying pressure to the nut. (The exception is pots that have a registration pin, but you don't normally see those on stompboxes.)
 
Not doing so risks internal damage. Twisting the pot can break the wires connected to it if they don't have enough slack in them. Some pots are soldered to circuit boards, and twisting them can break solder connections or even lift traces from the printed circuit. Some pots are cheaply constructed, made almost entirely of plastic, and are therefore fragile. These problems can occur either while loosening or tightening the nut.
 
As for the different shaft styles, those aren't necessarily a problem. I have replaced knobs many times using generic knobs on technically-incompatible split, splined and keyed shafts, and usually they work acceptably well. Sometimes you have to slightly rotate the knob so that the set screw doesn't go into the split or so it lines up with the flat part if the shaft has one.
 
I have, however, broken split shafts doing this, so the practice is not entirely without peril.