MPS can take many forms and to suggest that any one form is somehow invald is unnecessary and I would suggest unwise. If we consider the MPS model that does not include hardware, then, technically, the MFP's can be considered to be already on an MPS program in that they are on a service and supply agreement that is billed somehow based on the clicks they run. To include printers and somehow blend the rate to one common rate takes away some of the purpose in my opinion, which is to migrate volume to more cost effective devices. The best way to get a company to get serious about migrating volume is to have a dual rate plan so that any volume migrated actually creates a lower cost, assuming that is their goal.