Well, for just a gambling demo, I would say the Up the ladder cut would be ok. However, if you are really going for a RRSRC sequence, for the poker game, then using the up the ladder could go badly. Usually, the strip part of the sequence, the half you are stripping from doesn't come in contact with the deck. You are holding the half to strip from at about 2 cm above the deck, but not touching it. When you execute an up the ladder, you have to replace the entire half onto the deck each time before you strip out the bottom portion again.
Having said this, the "up the ladder" doesn't actually represent the stripping action accurately.
Now, if you are going for a full deck order retention for a gambling demo, the good news is you dont really have to abide bye the strict rules of the RRRSRC or RRSRC, so your up the ladder will be ok. However, at the card table, I would stay away from the up the ladder cut. (which his ok, because you dont need a full deck retention, only a 1/3 deck order retention).