Looked at your other post. You are quite the expert !
I actually love the pencils. Just as you stated in your other post, not all methods work with all coins and their conditions/shapes.
Whatever the method, care and patience are keys.
The only times I tried the peroxyde method, almost every time I made a mess. :( I guess I am not an expert at this one !
Last but not least, it all depends on what you are looking for in a coin. Sometimes, the less cleaning, the better. With IH, the pencils really respect the patina. This is what I really like about them.
Here are two videos that present them better: (I actually translated them)
https://www.youtube.com/watch?v=KET7f3Md5jQ
https://www.youtube.com/watch?v=yxUeRsTHehI