I've ridden both and prefer the Pace, for being shorter and more chuckable and generally feeling livelier. I thought the Hemlock was good in a classic Horst-link sort of way, but not extraordinary. Then again, my Pace is better specced and set up, I think, than the Hemlock I rode and the Hemlock was very effective. That's just me though.
It's an obvious thing to say, but the best way to decide, by far, is to demo both, preferably back to back – 18 Bikes in Hope, I think, have both available if you're up that way.
Are you really that swayed by cosmetics btw? Surely if the bike rides right, the looks are pretty secondary.