In theory it should be supported, in practice no one has tested it though.

You are in luck though, the new ASICMiner USB devices use the Icarus protocol an Kano from cgminer is doing a lot of work on it (I had cause to look at his code a few days back, he is one smart cookie).  All going well (provided I can get my hands on an ASICMiner USB device, I ran a group buy and the way it worked out I did not manage to get one myself) as soon as Kano releases it I will recompile it into MinePeon and release it.

Neil