I love the soft tips...they play realllll good.
You will be surprised at how easy they trim just using a razor blade if you wet the leather first.
Wetting the leather should help it cut cleaner even if you are using the cutting tool on your lathe. Most of the installers here are using a razor blade and cutting the tips flush with the ferrule freehand. I recommend turning your lathe at a fairly slow speed for trimming with a razor (500-600 rpm) but if you are using the cutting tool on your lathe I would say go up to 1500+ rpm and use a sharp cutter. Watch some of the videos on here or YouTube to see how they are cutting the tips with a blade. It takes some practice but isn't dangerous (if you're careful) and will give you great results. Joe's video is excellent and my installation video should be helpful also.I trim the tips with a lathe cut tool, the lathe is custom made and has no appliance for blade usage. Additionally, it has non-shielded chuck which makes using blades pretty dangerous even if we had such a jig.
Could moistening the tip before work the same good way in my case? I have never tried that, I apply some wet only to burnish the edge, and wax it after.
this is how I install the tips, seemed to install really well...
http://www.youtube.com/user/Cuejoscuerepair?feature=mhee#p/a/u/1/gyoQxqr2eFc