Do you just need a specialized group to receive particular commodities like IT Technology, or is your requirement based on segregation of duty issues?
I think you can satisfy both requirements since the receiving approval flow in P2O is configurable. For example, you could setup the rule so that IT commodity is routed to a central IT receiving group. You can use an OOTB group or create a custom group and associate it with the commodity through a lookup table file.
If the requirement is related segregation of duties, you could create an additional special approval rule on the receiving flow which checks that the requester of the item on the order is not a member of the receiving group. In that case, you could add an additional alternate approver to ensure the segregation of duties is met.
Hope this helps,