i'd say the worry would be sitting in the pool for several months and losing not just instrument currency but more importantly instrument proficiency. Then getting to your class, and busting out of training during the simulator portion and being back on the street, only this time, hiring is stringent, and you can't find 5 other opportunities an arms reach away. If you're low time, in the pool, my advice would be to remain proficient for when the time comes to get back in the game....that goes for high time guys as well, jobs may be scarce for all.