nick777 wrote:
Doubles are permitted on any two-card hand except a blackjack. This allows the player to choose to double when he is most likely to win more freely.
Doubles are permitted after splitting. This allows a player to potentially get many bets out in favourable circumstances.
Did you read the two-card hand part in your quote? If you split a pair of 10s, it is initially a 1-card hand. It is not a two-card hand until the dealer gives you the second card, increasing the total to 12+.