Looks as if it is introducing a useful mechanic. However, I find there to be a poor choice of verbs and adverbs. No drawings. Some discussion at Magic Cafe is not revealing and what is on YouTube is garnish. Leaves me feeling like a virgin (after 50 years of a sleight life).
Having picked up an original Bendix Bombshell Wallet about 25 years (at an auction for about $10 - the leather is a bit stiff) it is wonderful to finally have the full book of routines (and to find out from the wallet's website that a new one retails for about $96 USD).
This thing is ingenious. It looks as if it should be fragile until one realizes it is of one piece and there is nothing to fall apart. The blister it leaves is innocuous but quite visible/feelable. It is small enough for the pocket so as to be used for impromptu miracles or those with a borrowed deck. However, a downside is that in order to hit the same spot, some external sizer will need to be made/jerry-rigged. These exactly placed blisters are nice for, say, Bee Club Special, or Erdnase (Conjuring Arts) backs with criss-cross patterns. Raising one of the diagonals with a blister leaves a broken or non-straight line to be seen, rather than a more obvious blister. The Pinpoint Pegger with a blunted pin may do a better job (or at least be easier) because of the ability to lock in 3D coordinates.
This card punch is surprisingly compact, light and solid. It leaves a nice prick, visible to eye and finger as it were. This could have utility with an impromptu or borrowed deck situation. Compared to the Pinpoint Pegger it is less expensive and more stable but lacks the settings to duplicate positioning. Still, I think this is something all magicians should get to throw into their kit for that time when they have need of a miracle.