I am a member of the SCA although I will let it lapse as I have lost interest.

The official time period for the SCA is 400 AD to 1700 AD. The SCA have problems with clothes and weapons vs personas. For safety reasons they wear either leather or plate or a combination of the two. The fights are scored as if wearing 11th century chainmaile. The persona might be say a Scot from 950AD and we don't really know for sure if they wore kilts or brats or what. When in "court" all SCA wear "court clothes" up to Elizibethen times.

Now the SCA knows that these are horrendous anacronisms but they do at least know the differance.