As is well known I own a SUC case and use it for two things only; an astrology match bit that Mark featured in one of the books dealing with the device and for pocket writing, that's it. Beyond that I have never found a need, nor any sense of logic being having such a contraption. But then I rarely use a Swami gimmick even though I have a slightly different pov when it comes to them. Doing a Book Test while strolling... I'm sorry old man but that's just hilarious and well over the top... the exception would be if you happened to be in a room where magazines, newspapers or actual books already existed and you worked them into a demonstration; that is when the routine becomes an intrigue vs. a trick that you just happen to have on your person... at least in my experience.
As I've stated, 90% of the time if I'm strolling, I do little other than Readings... after all, most everyone present has hands and a face and a name... you need nothing else other than your own charm and a git of psychological savvy. If I'm not doing standard readings I may have some billets, including my Butterfly device and of course golf pencils. I am sometimes set for Cassidy's Jazz Q&A routine which is little more than billets and a TT.
The objective of the Psychic Entertainer is to be as clean as he or she can possibly be, not dressed for war with every James Bond gadget on the market. Though I have major issues with Tomo, I still have to give what I know about his Naked Mentalism a big thumbs up when it comes to this point. It's not necessarily original to him from what I've been told, but it does extend a sense of challenge to the performer that is rather over-due. Then again, we are seeing more and more of this kind of contribution through the works of Alain Bellon, Jerome Finely, Devin Knight and others.
Admittedly it is a personal pet peeve, but I stopped being a "Magician" nearly 20 years ago e.g. I no longer have an excuse for filling my pockets with stuff. Not when I know my craft and strive to fulfill my role as well as my obligation to the public, by removing those devices that could lend to them a means of reverse engineering and thus, the loss of enchantment... especially for the more skeptical in a group; the sort I'm quite proud of "converting" with great frequency because I've robbed them of the common explanations found in their most common resources. But that is very much part of my job description and as I was taught, the obligation of anyone claiming to be a Mentalist.
I'm not "Picking on" you Tod, but your outline reveals far more closely what not to do than what is timely and practical; it's magician's thinking stemming out of magician's habit... something we all are prone to as we start out in the transition away from the one and into the other. Sadly, it is a trench many find more comfortable in that they can play in both worlds rather than making a dedicated choice of investment one way or the other.
Mental Magic, such as you describe of yourself, is certainly more commercially viable -- it's safe! It likewise lends a great deal of production value when doing "a show". But it is not Mentalism, even Larry Becker admits to this, recognizing that much of what he's done for years is just that "Mental Magic" vs. the more Kreskinesque mode of things in which a greater degree of realism was set into place and next to no "gadgets" (other than his silly blinder around his note pad... it's very old school but quite out-moded).
Mental Magic can be far more "fun" so to speak and much easier to learn than true Mentalism, which is rarely as forgiving. Though it too can be loads of fun the reason for the glee stems from an entirely different state of mind. This is likewise true of Bizarre Magick based on whether you are presenting a ghostly "seance" type routine or things more tongue-n-cheek such as the late Gene Poinc would do via Lizzie's Bunny's or Kal the Kadaver Karpenter... (which is still one of my favorite bits to pull out every now and then).
The Less is More attitude is well outlined in Paul Book's ALCHEMICAL MAGIC and given the number of accolades the book received within this forum alone, I find it peculiar the scores of folks that have yet to embrace the lessons and principles it expressed.
but enough of my preaching


