I would definitely suggest mixing it ... there really is no need to taste the chlorine dioxide. When you make up a batch, cover the sake glass with a plate for the 3 min time period ... when done, it should appear yellowish, and smell like chlorine dioxide.
Here is something that is fun and healthy to do ... blend up a carrot and some water and mix that with the Miracle-Mineral-Supplement , or add some grass/veggie powder to the water for your juice.