Im currently cycling both products as per mullet's method -
AP 1 - 2 (weeks)
AP/P-SLIN 3 -4
P-SLIN 5 - 6
P-SLIN/AP - 7 - 8
Rinse, repeat. So you're taking a two week break off of each one, and still getting the wicked effects.
You certianly know about it coming back on, and get a little extra value for money thrown in to boot by extending your stash life.