On one call I think it was Gustafson said that they've probably had some level of conversation with just about every bio/pharma name you could come up with... But maybe I should try to get a patent in place just in case :-)
Plus not being a science guy probably one of the science people will post telling me why (even with HALO's technology) going sub-q would make reactions worse or the drug less tolerated (infusions too fast or something).