Short question:
For example, I field 2 Jokaeros in a Warband:
1st roll: +1 for having 2 Jokaeros
2nd roll: +1 for having ...
...
or
1st roll: +1 for having 2 Jokaeros
2nd roll: +2 for having ...
3rd roll: +3 ... (if I roll 6 or double)
...
/Edit: oh and sorry ... wrong forum