PI space and colocation

Questions: If one gets PI space from ARIN for their network, then moves the servers to a rack at a data center (still using the space efficiently), will most colocation providers announce this space for them, or would most providers require them to take allocated space from them? Is it a reasonable alternative to establish a BGP connection with the provider over ethernet? Is this ok per ARINs requirements, assuming you first acquired this space under their multihomed network guidelines? TIA, James Smallacombe PlantageNet, Inc. CEO and Janitor up@3.am http://3.am =========================================================================