LockScreen and Notifications on lock screen

How do you get dash clock on the lock screen? Coming from blackberry I'm kind of shocked the S5 is so limited to what you see on lock screen. Loved being able to see that on Blackberry. Also really miss the toast notifications for bums, texts, email, etc that I could instantly reply to without leaving the screen. Love everything else though!
 
C Locker


Just switched from an iPhone to the S5... haven't had an android phone since the original droid... I know you can't add widget to the S5's lockscreen. Is there a way to determine what notifications appear on the lockscreen? Can you have texts display? (with or without a preview similar to iphone) or FB messages etc? Also, can you replace the lock screen through a launcher or something similar?
 
NiLS floating panel is a good alternative for lock screen widgets, other than that, you'll have to wait till Android L.