While normally it's not much of a problem, when DE lance is locked-on, AS increases chance for double hit from 0,49 to 0,55, due to 4's in the initial roll also being rerolled. While chance do inflict any damage drops (from 1,24 to 1,1), chance to inflict double damage increases, making recieving locked on phantom lance shot more risky affair.
Changing it to -1 to hit would make them do double damage only on 6 and stil retain option for inflicting single point of damage.
It's not that much of a differance, so if no one else thinks alike, I can live with that. Just bothers me a bit.