In case some of you missed it, the latest firmware upgrade for the Samsung SCH-LC11 router was recently released...
www.samsung.com/us/LC11/update/
This latest version now includes a "Connection Schedule" option that allows you to force "EVDO Only" or "LTE Only" as your desired connection. The option in available under "Connection > Settings".
I specifically asked for this feature during a chat with Samsung tech support last month. The rep said they'd put in a feature request. I didn't actually think I'd ever see this feature on the SCH-LC11, but it's most appreciated.