Starting with un-comboed Halone isnt mandatory, but I can see it helps. Last night i was trying to MT Cad (for the first time), so I used Fight or Flight, Shield Lob, un-comboed Halone, Flash, then start on the Halone Combo. It may not be the best opening sequence, but works for me. The same when I OF ADS before Cad. Shield Lob, un-comboed Halone, Flash, then combo Halone. It works for me. But spamming un-comboed Halone? Thats a no-no. =P
Flash still has a lower enmity modifier than un-comboed Halone. And juniglee was asking me because I said in an earlier post that sometimes I like to start with un-comboed Halone just for a good initial enmity.