There are lots of advantages of doing an inverse assignment instead of a GS.

If an inverse shows up that you want to fly, call and see if it's still available. If you end up flying it, you won't have used up GS#1 for the month yet since that's in it's own category.

Not that there is a limit to the number of GS in a month, but recall that a GS goes down the list in seniority order and if people have flown GS#2, GS#4, etc. already themselves, then if a GS that meets your preferences pops up, it will be offered to you before someone gets it as their second greenslip of the month.

What is even better than both right now on the 717 is a greenslip with conflict. Those are the "C" you see in the daily trip coverage page.

What you want to do is pickup a 2-day conflict that bumps your 4-day of f your schedule, with pay. Or pickup a 3-day that touches a 5-day. Or pickup a 4-day that touches a 5-day. etc. You want the trip being picked up to be shorter than the original one you had, or at least, the same length...because they both pay regular pay. A good deal, but only if you do it right. Picking up a 5-day that conflicts with your 2-day trip would not be a great deal...you'd be working for regular pay for three extra days and losing days off.