I have the theory11 ones and I must say they are very nicely handcrafted. Haven't worked out a routine using it though. Dan and Dave have brought it one step further and catered to the masses with a variety of different backs. Well done!
i totally agree with you .. they are offering the hofzinser playing cards with alot of different back design .. but i would prefer they offer back design for the fulton clip joint of smoke and mirror series .. since i do not really do magic with the plaid deck
The Hofzinser cards require a red back for the gimmick to work. This would rule out FCJ and all but version 6 of S&M. Even that version might not work, because it's a rather dark shade of red.
A good way to work them into a routine: do a "pick a card" routine and force them to pick the normal version of one of the hidden faces. Draw the Hofzinser card and declare that it's their card, to which they'll say, "nope, you're wrong, I fooled you, etc." Do some "hocus pocus" on the card, hold it up to the light, and declare, "I told you it was your card!" If you really want to sell it, draw the real face card that's on the face of the Hofzinser, hold it to the light, etc., then in the "hocus pocus" phase, swap the real card for the Hofzinser - that would be VERY powerful...