I'm tryng to get BiteSMS and androidlock xt to play nice also. From the lock screen, anyone can just click open and it let's you into BiteSMS and the whole phone.
I happened to be looking up android unlock apps and came across this thread. FWIW, you go into the settings of Androidlock XT and turn off "insecure mode"
ref thread: https://forums.macrumors.com/threads/1325735/