It's still a dealing shoe - just one that's designed for fewer decks.
And if he thinks that a dealing shoe can't be gimmicked, he's not very knowledgable about cheating techniques in card games. I've seen shoes gimmicked specifically to allow the dealer to second-deal cards.
It's kind of silly, actually. Let's take his points for using such a device.
We first got the idea back in college playing card games. We would use a casino style dealing shoe, only to realize that it was difficult to move and did not work very well with a single deck of cards. Well, duh - unless you're playing blackjack or baccarat, a dealer's shoe is completely unnecessary. It would need to be refilled after EVERY HAND. That doesn't add up to convenient to me.
Playing with just a pile of cards in the middle of the table was not ideal because it would get knocked over and every once in a while a card could be seen. First of all, no one just leaves the deck in the middle of the table! The dealer keeps it away from the discards and the pot. As far as flashing the bottom card - that's what cut cards are for! Don't have one? Use an ad card from the deck!
The reason deck shoes aren't good with a single deck is that they're used for games that require multiple decks. The newest ones are pretty wild - they automatically reshuffle the discards with the cards already in the shoe, completely randomizing the cards every time they go in the shoe. Totally thwarts any attempts at card counting, which relies on knowledge of the cards played and the cards remaining in the shoe. Putting the played cards and mixing the order, done frequently, doesn't allow enough of the cards to pass through to give the card counter a base to work from to predict cards coming from the shoe.
Back to the point - I have never seen a poker game at a casino or elsewhere dealt from a shoe. This is more like a solution that's looking for a problem that doesn't really exist. If I had to work that hard to keep the players at my table honest, they wouldn't be playing at my table... Shufflers make sense because not everyone can shuffle, but I've never met a person who couldn't deal. Granted, a few of the dealers I've seen are slow and plodding, dealing the wrong cards to the wrong people, but this one-deck shoe isn't going to solve that problem at all.