I must re-state the concern that basing the FSFE logo on what is essentially an "in" joke is probably a mistake (ie. the whole Gnu thing is not someone the intended audience of most of our public statements will understand - "what does a moose have to do with free software?" etc).
Firstly, I assume that your use of FSFE is a typo. I guess you mean IFSO.
I think we are in broad agreement that a Gnu with a harp isn't a suitable IFSO logo. My own reluctance to using it is due to the fact that it implies a stronger connection with the FSF than we can justifiably claim.
On the other hand, I do think this logo would be great for a potential Free Software promotion campaign. I personally think that a Gnu with a harp is a very suitable image for promoting "Free Software in Ireland". We could, for example, stick it on CD covers, t-shirts, web-pages. The harp is an effective image within Ireland. And the Gnu is cute!
Malcohol.