Wow, the OP is such a liar himself! He even dares to accuse someone else of lying although he's the biggest liar I've seen in this mod (and I've played it for 4 years already so I know what I'm talking about).
In fact, double-sided lance has a secondary mode that activates automatically changing the side you use to attack after every block you make, although it's hard to notice because both sides look pretty much alike.
So check your facts before accusing someone!