The world has a way of balancing itself it seems. Is Ebisu's power a static or shifting thing? The curious part of Ginia wants to see what would happen if the two met. The sensible side recognizes this could be disastrous to everyone and everything around them and it's not worth the risk for casual experimenting.

Ginia is also fairly certain of Ebisu caught wind of this, he'd want to find out for his own knowledge too. 

"Perhaps it's safer if the two don't meet. Along with what would happen in the area they met in, I worry about any lingering effects after they leave too."

Bad luck and good luck are a matter of perspective. Good luck could aid the wrong people in a given moment just as bad luck could aid the right people.