I've whitelisted gents here who have not reviewed me here. REVIEW and WHITELIST are two completely separate, independent functions. as long as a gentleman is a member here, he can be whitelisted by a lady here. I'm all about safety (for all parties), and so am happy to whitelist a gent on TER if he's a member here - even if he met and/or reviewed me elsewhere. if he was a gentleman to me on our date, and therefore its a valid reference - is there a reason why not? it'll help him get future dates, as it'll help other ladies screen him quickly and easily.
all info is good info - for all of us.
edited to add: for me, it's always appreciated if a guy writes a review - but I will never hold hostage a reference on him just because he chooses not to write one!