electronic deadbolt or drop bolt?

Leave the existing lock "as is" for full security, i.e. lock it when going to bed or on vacation. Use the electronic lock for the "convenience"

Or face the fact that if someone wants in, they're going to break the glass and never use the existing lock...

quick google search came up with these:

[Link: thebuilderssupply.com]

[Link: americanlocksets.com]

[Link: grainger.com]

Yes, fleetwood is alive and well. Working on of fleetwood sliders right now.