Does anybody know how to use 2 full size jingums for cutting? I have seen some clips of demos being done using 2 swords for cutting, but I never saw how they were drawn out of the gumjip.

Here's a link to a series of clips showcasing various jipdan cutting. I'm not familiar with the organization.

http://www.koreabaldodo.com/data_1.htm

The first series of clips contain some two sword cutting. Be prepared to wait, since the file sizes vary from 10-80MB, however you'll see several paldo chakgums. Check out "Boss_1" and "Boss_7".

One important thing I noticed from the clip was that both the belt and uniform appeared to be leather or some similar material. I believe this was on purpose and not purely for theatrics. Leather provides more friction than cloth. With only one hand to draw the sword, more friction is needed to resist movement of the scabbard when drawing.

It goes without saying that two sword is extremely dangerous. If your interest is more than scholarly I'd caution against it.

Wow.