I stand, but I put my legs out wide and lock into a firm stance, and this also puts my face right next to the grinding work. I use an optivisor for finish grinding (at least the plunge) and my #3 Optivisor has about 14-18" working focal length.
I'm not too worried about getting close to it... if something goes wrong, it goes wrong. I take as many precautions as I can (hat, safety glasses, mask) but the idea of "getting away" from the grinder isn't going to be much of an issue if something goes wrong. I have had belts break and blades get grabbed and thrown... it happens SO DAMN FAST, it's done and over with by the time you realize what the f just happened.
The ONE argument regarding sitting to grind that I could not go against, is that you should try to keep you legs in a position that a stray blade would not get chunked into your femural artery.
OBVIOUSLY Steve has found this to be a sturdy, and consistent way for him to grind. You'd be hard pressed to find anybody who doesn't think his grinds (and knives in general) are approaching perfection.
BTW- Chuck Bybee told me last night on the phone that the SRJ sub-hilt video is the best instructional one he's seen. I will be buying it for sure!
