This is similar to a lot of places. I did this back in January from the absolutely terrible schedule pbs awarded me. I was able to drop or trade away all the junk wound up working about 40hrs, the paychecks were horrible though obviously. It was nice having the mini vacation but not something I would say Id be able to do again. As for being rusty...it took maybe half a second to remember the after start flow but might not be so easy for someone consistently doing it.