I'm not familiar with/don't ride that particular bike, but the head tube angle is the same as my Salsa Casseroll, which has pretty straight forks, and not much trail either. Yes, the steering is a lot faster than my old hybrid, but certainly not unmanageable.
190 pounds? I wouldn't worry about ANY frame material at that weight.
However, the largest frame listed on that website is 59 CM. Do you know if 59 will fit you at 6'5"? One of the problems with buying from a site like Bikesdirect is buying sight unseen; being unable to try it to make sure that it fits.