Yo djo - I actually prefer tampers with a 30 degree slope or so. Plus I like them thinner than the regulation 17mm. I can slant the tamper to push tobacco away from the wall and mound it up, then flatten the whole thang.
IMO the tamping surface is a little to small on the Rodgers type pipe tool. I noticed the other day that the head pivots on the rivet on my Rodgers like Gawith pipe tool. I like a sharp and slightly angled tamper like the Totem-Star Icon pipe tamper more than the Convex Ming tampers that I love and collect.
"Governments may think and say as they like, but force cannot be eliminated, and it is the only real and unanswerable power. We are told that the pen is mightier than the sword, but I know which of these weapons I would choose."~Sir Adrian