The 90 hours of turbine time you get in the T-6 program is minuscule to the amount of time it's going to take to get a job with an airline, unless of course you were a FAIP or an IP and have a few thousand hours in it. None the less, there are fighter pilots who've spent their whole careers flying single engine turbine jets who get jobs with the airlines just like anyone else. I don't think it will hurt you and given the fact the airlines tend to like military types due to all the formal training we go through, you'll be fine.