GIB sound's like a really difficult airport! I'm surprised anyone bothers to fly there at all, or at least bothered to when it was an MOD field.
I always thought the A319 was too big for GIB-MAD with IB. Someone like EZY might... Might be able to fill one because of the low fares but 50-100 seats would seemingly be a better fit! I don't think Andalus was a very well known name either, is the E145 a cheap aircraft to operate?