This has been asked about before and at the moment the only list that allows taking them on foot is the Vior'la list.
The list AC, yme-loc, has reservations about adding them on foot for list balance issues. He makes a few fair points, mainly around opening up the possibility of them being loaded into orcas. It would have a lot of knock on effects that would need to be balanced for; basically it wouldn't be as simple as just adding them to the list with an adjusted points cost so for now it's not on the cards I'm afraid...
viewtopic.php?f=23&t=25792[Edit] Just had a quick look at the Vior'la list here:
viewtopic.php?f=23&t=24822Doesn't look all that different to the Third Phase Expansion list to be honest, basically includes Vespids, Sunshark and Razorsharks, XV104s and pathfinders on foot. You should easily be able to use it with what you've got if you wanted to.
[Edit2] And it looks like you've painted them up in at least one form of Vior'la colours as well - it must be fate!!