Does blackjack switch have a greater house advantage than just standard blackjack?

Generally speaking, yes. Dealer not losing on 22 is rough.

Generally yes, but if played correctly, it would be better than a poor blackjack game like 6:5 BJ in Vegas or even a 3:2 game that would only allow you to double on 10 or 11 and hits soft 17.

Optimal strategy makes the house edge of the game 0.58% in Vegas at least, but without an illegal computer handy you'll never play optimally. If you follow the "simple" strategy in the link below, the game will have a 0.76% edge.

http://wizardofodds.com/games/blackjack/switch/