Just like the Burlington Bowline Single Column Tie, this Double Column Tie can be made into a slipped version, which makes it much quicker to release your partner from if you need to do so in a hurry. 

It is also just more convenient for the top to undo if they wish to make their life easier. 

Another reason you might want to make a tie easier to undo is so that you (as the top) know that you can release someone if they stat to feel uncomfortable with staying in the tie. This works for the bottom’s side too; if a person feels that there is less of a barrier to exiting the situation, it is likely that they will be able to explore closer to their boundaries/limits than they might have been otherwise. 

Making a tie quick to release will also allow a everyone to feel generally safer than what they might otherwise; something I personally always strive for.

Below you’ll find a breakdown of how to change the standard Double Column Tie into a slipped (or quick release) DCT.