I think all fish can get ich, its just a matter of how easily they can get it. Fish with a thick slime coat (i.e. mandarins) will not as readily get it. The ich cysts can last awhile in your tank, but if your fish are healthy before you put them in the tank I would think that they should be okay.
37g mixed reef (primarily LPS). orchid dottyback (Pseudochromis fridmani), sixline wrasse (Pseudocheilinus hexataenia), 2 cinnamon clowns (Amphiprion melanopus), orange diamond goby (Valencienna puellaris), bi-color blenny (Ecsenius bicolor), and longnose hawkfish (Oxycirrhites typus )
10g planted 3 neon tetras (Paracheirodon innesi), juvi Apisto Agassizi