I have to agree with cavscout. Currently, I am on active duty with the USAF by way of the Air National Guard. I am also the Post Commander for the local Scottish American Military Society (SAMS). I have a USAF kilt that I wear all of the time. I have also wore it to a formal Joint Forces Christmas Party in 2007. Everytime, I represent SAMS at a festival or parade, I will wear the USAF tartan. I purchased mine from Alexis down in Florida along with a USAF belt buckle. I have worn my USAF kilt with my mess top. With all of the medals it really looks good.
I would get the Leatherneck kilt first and wear it with pride. Good luck.