The shuttle will do a lot of overnights in DC. You have a good chance of sleeping in your own bed a lot. The reserves are getting used, as you said. The difference between holding a line and not is the quality of the trips. On reserve you will get lots of broken trips. If a three day trip, for example, is in open time scheduling does not have to give a reserve the trip as it was built. They can break it up. A line holder is assured an average of 5:15 per duty period. Not so for a reserve. On reserve you will end up with lots of trips where you only fly one or two legs in a duty period and end up with 3 hours of pay for that day. Bottom line.....on reserve you will fly more than a line holder but get paid less.