Is there any penalty for leaving and rejoining faction warfare?

I have a lot of saved up LP on my faction warfare alt. In order to cash in this LP I need to haul a lot of expensive material between the LP store and the nearby market hub. However, hauling lots of cargo in an industrial is extremely risky while still within faction warfare as I can get shot down in high sec without penalty.

It would be ideal to drop out of faction warfare to haul my goods, then join back up to continue the fight. Repeat on a daily basis. Are there any penalties (e.g. in standing, or a "cooldown period") for leaving and rejoining faction warfare (as an individual)?