IMO it's safer to have the wood flat on the table. You are seldom going to use the entire bit in a situation like that, so you will get differential wear, but you can always get a bit sharpened, or buy a new one.
I'm not slow, I'm pacing myself!
Isaiah 44:13 Another shapes wood, he extends a measuring line, he outlines it with red chalk. He works it with planes and outlines it with a compass...
Usual kit: Table saw, band saw, dual base router and table, lathe, various saws, planer, sanders, and a multitude of hand tools.