Based on a long history of using industrial-grade self-adhesive velcro [I kid you not] & comparing that to 'what is needed so you can remove an adhesive without damaging wallpaper'
It will fall off in the first 5 minutes of use.
Avoid.
To better explain...
The 'no damage wallpaper' system relies on the force being vertical to a long strip of very poor adhesive - no movement, no off-axis force.
First time you pull in the 'wrong' direction, it will come unstuck... intentionally.
Good for wallpaper, not good for your performance.
Trying to fish your rattling tuner out of the guitar mid-gig is not going to be amusing for anyone except the audience ;-)