Joe,
I have a few TC grinders and don't use them often now that I am retired.
I think they are highly underrated because many shop owners don't know how versatile they can be.
One might be used as a bench grinder, OD, end mills, reamers, drills, step tools, d drills. cut-off, rock & stone cutting, some an OK surface grinder, circular saws, Insert and solid mill cutters, circular knives, custom knives, Gun drill & reamers, tool bits, .
Many cutters cost 1/2 or 1/3 new price to sharpen / but may only take 10 minutes to do.
All of this ability in one small machine space.
Note: the very best circular saw is one that is circled (OD) ground and then eyeball ground to just tale to sharp. When working at the big shop carpenters would bring me the highest quality brand new circular saws to sharpen because this method made them that much better. An 18" saw might take a half hour when new and only need a true-up.
Gun drills and reamers are run between centers and might take 5 o 10 minutes each. Reamers the same.
*Still, a CNC 5axis Tc grinder can outperform a manual Tc grinder to make new or sharpen but requires big upfront to buy such a machine, all the needed wheels, bushings and holders
Buck