As I see it, there is only one issue here and that is that every pilot no matter who you are shouldn't be worried if it is a test OR a review. Either you are up to standard or you shouldn't be in an aircraft without an instructor until your are.
Not being up to speed with all the Civie regulations, and not knowing whether there are or are not guidelines, then I guess as someone who is reviewing another pilot you could use the....'Would I be happy to let this pilot take my family and loved ones flying?' Why let someone fly around who could quite possibly be in the same piece of airspace as yourself one day. Wouldn't you rather he know what he/she is doing.
As a pilot who is up for a review, then who are you trying to kid if are not up to speed. Go and fly with a instructor until you are. Why be dangerous? It should be in your own interest to be the best pilot you can be. Otherwise you may not be flying for much longer anyway.
TW.