I just tried the Info plugin, but sadly, it doesn't show start/end coordinates too.
So I'm afraid, there is no direct way yet.
What you can do is to draw a simple 2-Points line with snap on endpoints from the curves start to end.
Then use Properties tool or Info plugin with the 2-Points line.
When you have more curves, place all the lines on a new layer which you can easy delete after checks or make it invisible.