So lets say I use Holy Grail to convert my Philistine Armor Bearer that has Goliaths Spear attached to him to a red brigade hero. Why? Because I'm funny like that.
A) Could Abishai or Joab (promo) then band to him because he would be a Red Brigade Warrior Class hero mentioned in 1 or 2 Samuel, which meets the requirements for the band.
B) His ability to go get an evil Philistine character from my deck or discard pile is ka-put, right? If not, if I go get one and said evil character is kicked out of the battle, does the weapon remain with them?