Hallo Nathan
I am very interested in western combatives traditional or not , so it is a pleasure to explain the little things I know about them ...
I am 19 years and I train martial arts since almost 2 years. I train in kickboxing and german ju jutzu ..
Sadly untill now I don't have the possibility to train ''officialy'' in western arts . Kickboxing has indeed influences from Western Boxing , but it is more a mix from Boxing , Karate and muai thai .
German ''ju jutzu'' is a modern mix from many styles, but sadly the most people think its only the traditional japanese ju jutzu .
I will start train Savate in a few months who is from France.
Later I will train also in Glima .
Untill now I train only ''in my home'' techniques from Johann Georg von Paschen who are very usefull and effective and specially the preface of his work at ''Ringen'' is very inspiring.
Look so far I understand untill know has Glima only three styles .
Trousergrip (belt wrestling)
Hrygspenna(backhold wrestling)
Lausatoek (free wrestling) this variation can be trained also for purely for selfdefense and has striking elements too.
Glima is not only a game , not only wrestling but it is also for selfdefense. Glima survived in Iceland in a unbroken tradition since the Viking era and so today it is famous again in whole North Europe....
http://en.wikipedia.org/wiki/Glima
http://internationalglima.com/ (the sporting aspect of Glima)
http://www.viking-glima.com/ ( the martial aspect of Glima)
Glima is very effective , the training in it has very fun(from a dvd with techniques that I have) and it is one of the few western arts who survived in unbroken tradition...
So that was my knowledge about Glima

...
I found later in internet a art with the name ''Runa Glima'' .
So far I understand is ''Runa Glima'' not a style from Glima , but a relative independent art who claims to be practiced in a unbroken tradition since the 15 Century .... It claims to be evolved from the self defense variation of Glima Lausatoek Glima ... Runa Glima seems anyway very interesting...
http://en.wikipedia.org/wiki/Runa_Glima
http://runaglima.webs.com/