Yeah adryn keeps the same voltage profile -50mv at the top -75mv in the middle and -100mv at the bottom. Yeah if switching between these two its even more important to wipe the cache and the batt stats. In a case like the this the second full cycle on the battery will be the golden one, 1st will depend on if you fully charge and how much you drain it down.
But as a rule I now always wipe and batt stat wipe if I change kernels with new voltages. Same voltage [like a imnuts kernel] cache wipe advisable and recommended, still not mandatory per se. But if you are already in clockwork why not take 5 seconds and do it.