I have only sharpened with the rotation of the wheel towards me. I have read that either way is fine, no experience there. You must pay ATTENTION when doing this because if the sharp edge "grabs" the wheel it will scare the crap out of you! It will almost certainly gouge the wheel as the edge bites into the wheel. No lasting problems though. I have done this and hence my knowledge. The key is to create the burr and then buff it out. I like the more acute angle of 45° to make the initial burr removal. I then like to go to the less acute 20 ° or so to polish the edges. If the burr is not removed with the intial contact with the polishing wheel then try again. If you continue to have a burr and are unable to remove it, then REburr it and try again. Try to knock the burr off the first time.