I only recently came across this locker, which has about everything I need, and thus bought it after a few minutes.
The only thing that really puts me off is the enormous battery drain on my Nexus 4 – the warning for that is only visible after buying the Pro version – when enabling the proximity sensor for pocket detection, which I consider rather essential. Is there still hope this will get fixed in upcoming versions?
I've tried some other lockscreen notification tools, some of them did pocket detection without needing as much battery as SlideLock, so I assume it generally is possible to implement the feature in a battery-friendly way.
If you need logs or someone to try a potential fix, I'm happy to help.
LG Nexus 4 · Android 4.4.4 · TWRP 22.214.171.124
Asus Nexus 7 · Android 4.4.4 · ClockworkMod Touch 126.96.36.199
HTC Desire · VJ CM10.1 (Android 4.2.2) · ClockworkMod 188.8.131.52
Dell Streak 7 · Android 3.2 · ClockworkMod 184.108.40.206