So, as a pilot who might be out of touch with the reserve rules at JB...the reason I used to pick up open time on reserve was that they would be less likely to call me for the rest of the month.

If I recall correctly, if you were in the same reserve "silo", then the pilot with the least amount of block time would get called.

Sooo...pick up something that is tolerable right at the beginning of the month and then hope you never get called again.