c5rulz
Addicted to ArboristSite
You have your grinding crew all lined out in your shop - bolted to your bench. I take mine out in the field - even when I am home I prefer to grind outdoors. So I like the capability to do different wheels/chains on the same grinder.
Philbert
In the field if a chain is dull or out of gas/oil, just grab another saw. Kind of like a bass fisherman grabbing a pole rather than tying on another bait.