Hi Steve,
The Lindsay system is great. You don't need an expensive sharpening system, just the jigs and some stones. However, it is designed to sharpen angles suitable for hand engraving not using the graver as a chisel. The heel angle would be too shallow to sharpen a chisel. I use a Lindsay Airgraver so all of my tools are sharpened as hand gravers. You could make your own template for chisels, which would probably work well. Another limitation is that you can only use square gravers in the jig. GRS or Grobet gravers will not fit. It is designed for Glensteel or Momax cobalt type blanks. The other limitation is that the graver holder is made for the bare graver without a handle. If your graver is long enough you can attach it to the jig by passing it all the way through the holder but if the shank is short you won't be able to use the jig unless you remove the handle. I use the universal, detail, flat, and caligraphy templates. I mostly use the detail template because I find that I cannot see the tip clearly with Steve's universal design, although it cuts wonderfully. The face is broad and I cannot see the tip in the metal very well even under magnification. It is just my eyes and the lighting that I have available not any failure of Steve's design. Good luck Steve and I hope the info helps you.
dave