Ok, that makes sense.
As far as I know I have the same queens that got dripped in Jan - i.e. I haven't re-queened nor found any queen cells from a supercedure. I have seen no difference in their laying this year from last year when I did not drip. The yellow hive is going gang-busters like it did last year and the blue hive is slower to build up. I re-queened the blue one last summer but not because I re-queen regularly but because it had become too aggressive to work. That set it back of course, so I don't have a full season history like I do my yellow hive but I didn't observe any negative effects on either queen.
I have never used any chemicals in either hive and this is my third year with the yellow hive and second year with the blue one.