Originally Posted by BlueSkies

Based on my reading of it, you're actually worse off with an inverse assignment, unless you request to move an Xday into the IA rotation.

If you take a GS with less than 12 hours notice on LC that first duty period pays above guarantee (at least 5:15), not only 1 to 2 hours, unless I'm missing something in your example. (Assuming the rotation falls in one month only)

A res pilot on LC:
who is a long-call pilot will receive single pay, no credit (above the reserve guarantee) for the first duty period of a GS rotation flown on an on-call day if the report of the rotation is within 12 hours of the first attempted contact


A reserve pilot who has flown an inversely assigned rotation(s) will receive:
1) single pay and credit for the portion of such rotation(s) flown on his reserve on-call days (applied against his reserve guarantee), and
2) single pay, no credit for the portion of such rotation(s) that interrupted his X day(s) (in addition to any other pay and credit for the bid period).

and
A reserve pilot: (on IA)
who is awarded an IA rotation in which all duty periods of the rotation are scheduled to operate on on-call days may request one X day that coincides with a day on which the pilot does not have a duty period within the IA rotation be moved to the first day of the IA rotation. (For example, a reserve pilot with one X day on the 12th may be awarded a three-day IA rotation on the 11th which has a 30-hour layover and no duty period touches the 12th. That X day may be moved to the 11th.)

Also, a res pilot on LC:
who is awarded a GS rotation in which all duty periods of the rotation are scheduled to operate on on-call days may request one X day that coincides with a day during which the pilot does not have a duty period within the GS rotation be moved to the first day of the GS rotation.

So basically if you take it on LC you could get an extra 5:15 above guarantee and request to move an Xday to get another 5:15 (I think?), or you could take it as an IA and move an Xday also get 5:15, but no PB (I think?). Looks like LC is the better bet.