Guys, I know my question might be answered more quickly in the SS/FG forum, but I'm looking for specific DFW knowledge. I'll probably be picking up a Trek T1 in the next couple days, and it looks like it comes with 49x15 which equates to about 86 gear inches. On my geared bike I spend a pretty fair percentage of time in 53x19 which is only 73 gear inches. That's no small difference.
For you experienced fixed gear types in the DFW area, what kind of ratios are you running? I can pick up a couple extra cogs, but I'm inclined to just pick the bike up and ride it while before worrying about changing it.