I have no first hand experience with shave butter and don't plan on finding out.Is there a reason that a soap or cream is better than a butter? Would there be any benefit to applying the butter with a brush or would that not make a difference?
Traditional shave soap with high quality ingredients will most likely be far superior in terms of performance.
Based on a quick Google, it doesn't look like a quality shave product. You can keep using it, but I have always felt the lather making process is the key to a good shave.