Top 5 hiding jobs by luck (Only chasing bandits uses more charisma than mobility.)
1. Robbing trains, 1 green, 1 yellow
2. Grave robber, 1 green, no yellow
3. Break up gangs, 2 green, 1 yellow
4. Transporting prisoners, 2 green, 2 yellow
5. Chasing bandits, 1 green, 2 yellow
Top 5 hiding jobs by XP (Again, only chasing bandits uses more charisma than mobility.)
1. Transport alcohol, 3 green, 1 yellow
2. Robbing trains, 1 green, 1 yellow
3. Rob a bank, 2 green, 2 yellow
4. Hunting grizzly bears, 1 green, 1 yellow
5. Chasing bandits, 1 green, 2 yellow
Top 5 hiding jobs by cash (None use more charisma than mobility.)
1. Rob a bank, 2 green, 2 yellow
2. Break up gangs, 2 green, 1 yellow
3. Burglary, 2 green, 2 yellow
4. Ambush, 2 green, 2 yellow
5. Transport alcohol, 3 green, 1 yellow
I don't see why you'd even consider this a very good combination.
Pure hiding actually does fairly good in fort battles too, if you can get the best gear you can wear.
Any build can do well in fort battles, but pure hiding isn't any better than any other. Anyone can do well with defensive sector bonuses. I've done battles pure hiding and it's nothing special. Charisma/hiding would be better than pure hiding for fort battles just because of the leadership, but if you want a hiding build for fort battles, strength/hiding would be much much much better than either of them.