Yes, It does make a difference on the recievers side for what the caller ID displays.I noticed this one day spoofing from a undisclosed voip company different services use different databases to cross reference the cpn with subscriber information. This is why setting name information when spoofing through asterisk is very rare to work (when spoofing to PSTNs). For example, spoofing from VOIP line (A) to POTS line (B) would provide 'John m. Clark', where as spoofing from line (A) to voip line (C), would yield 'Clark, John'. Some providers will pass CPN name information, but I have only heard of this through direct PRI's to ma bell, and often the information is just dropped at some point regardless.
