nope, both the grandmaster and the brother captain are most definately IC's wether they take a retinue or not!
keep in mind that the daemonhunter 'dex was writen back in 3rd edition. the reference to 'no longer an independant character' was to stop him from leaving his retinue! (especially if it looked like the retinue was about to get thrashed!)
in the 4th edition rules, if a model has a IC rule then it is always an IC for the purposes of assaults and such...
if the retinue is wiped out, then the hero can simply join/leave other squads at will.
cheers!
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"Who are you to question my methods?! A 'Puritan' is simply a coward who hides behind a veil of pretended faith and denounces his loyal brother as a traitor out of simple jealousy!"
- Inquisitor Odion |