Nope, lots of infrastructure work been done to satisfy Embraer requirements.
That's not quite true. Flybe
announced it would bring the E175s to GCI on 21 July 2010, just six days after the potential Blue Islands/Aurigny merger was released to the press. A clear spanner in the works, considering that many passengers would prefer flying a shiny new jet to an ATR, however new.
Tests by the airport showed that the E175 could have started services before the Airport 2040 work, had they been available. But Flybe chose to deploy its first 175s to LGW and MAN - more lucrative, but no reason to put them into Guernsey with no imminent threat of the Blurigny merger.
Their argument over runway strength was going to backfire from the beginning, given that the reason the E195 hasn't been used in GCI is runway length (not strength) and that Aurigny occasionally charters a Titan 733 when its own aircraft are tech... no problems with runway strength/length here.
It was a bit of a publicity stunt, but at least Guernsey gets its first regular jet service since the last 146 left... I'll certainly be using it.
Confirmation here, hope that clears a few things up.