The other one is Impregnable.
It may be based on a font, but it would be hard to make it connect so well, especially with the small spaces between the strokes.
My guess is handmade, and not a font.
I think it's not a font, but here are some similar:
This is similar:
Edited on Mar 17, 2013 at 13:52 by drf_
Demo version here: http://www.dafont.com/before-the-rain.font?text=Twitter&psize=l
Edited 2 times. Last edit on Mar 11, 2013 at 15:52 by rocamaco
All times are CEST. The time is now 18:29