Hmm.. well, from what I see, the Spatial's probly in that list because it is called a "civilian" ship, thats sold everywhere in Sirius.. That though doesn't mean that the chances, or willingness of a Kruger employee in RP to have a Spatial is very high..
I'd personally go with the basalt/dactite/mafic ships to avoid "wut the.." remarks from other people, and prevent possible ooRP ship/ID sanctions from those report-happy players out there.. Ultimately though it's up to you though..
That list is something that Dusty made, so I'd say that as such it's ok to use it for the time being. Please note though that I will be enquiring him about this, and it may ultimately be changed... (I'll see if he can post a final word about it in this thread too)