I can understand why you'd be a fan of Zoeys, but trust me that with play you'll find they are kinda crap in the reliability and durability department. Heck, even St@lek is starting to field them over Zoeys in all of his lists, and that's after taking me to task for daring to suggest HG's were more reliable in practice. /whistle
Also, taking a subpar unit in all senses just hoping you don't run up against a multi-LR list that you can manage if you have to anyway ... is unwise. You'll notice that you don't have to invent that one achilles heel list when touting the HG ... i.e. for the Zoeys they are only better in one scenario, and it keeps getting harped on anywhere you look. The HG are better everywhere else and you still have 6+ monsters and multiple S10 shots by the time they get there ... so it's not like you're sitting totally screwed by the multi-raider lists ... AT ALL. You're just not quite as omgwtfpotent vs. them as you are vs. everything else. It's not even a harp on Hive Guard ... i.e. they don't just make the list omgwtfpwn everything. They're just a valuable/reliable component that is MORE valuable/reliable, esp. for their purpose, than zoeys. Zoeys are still cool/great/interesting/intriguging/awesome/etc.