I don't have a toe/camber gauge. Just from having GVR4's at various heights over the past 11 years is what I base my conclusions from. I've raised/lowered cars similar amounts in the past and then went to get an alignment only to have the tech tell me everything is still within spec. If you're dumping the car from stock height 2.5" this is different obviously.
Did your Honda use the MacPherson strut type front suspension, or a double wishbone a-arm setup? Different suspension setups do different things when lowering a car. A double wishbone setup might give more camber when it's compressed, effectively increasing toe-in. Anybody that's cambered in the front of our cars knows the toe angle changes like mad when you add some negative camber, requiring a realignment. Lowering a strut suspended car like ours, however, doesn't really change the camber angle when the suspension is compressed so the only change is due to the angle of the tie rod changing, which isn't much.