Actually there is a difference between Ichorid and Ashen Ghoul:
Ichord:
Text (TO): 3/1, Haste. ; At end of turn, sacrifice ~this~. ; At the beginning of your upkeep, if ~this~ is in your graveyard, you may remove a black creature card in your graveyard other than ~this~ from the game. If you do, return ~this~ to play.
Ashen Ghoul:
Text (IA+errata): 3/1, Haste. ;

: Return ~this~ from your graveyard to play. Play this ability only during your upkeep and only if three or more creature cards are above ~this~. [Oracle 2002/03/01]
Ashen Ghoul's can be activated during your whole upkeep, so also after you used the Hermit
That is what I thought at least,
Koen