I'm more curious than anything else.
In this polytheist society, that is having more than one god, would it not be unusual for a character to solely give reverence to only one? Presumably, there would have to be one dominate god that everyone reveres, but wouldn't they also have a collection of minor deities on the side? I am hesitant to use the word worship...revere reflects the nature that the RP works for now with following a god.
Like what bilbous said, the gods you serve would be dictated by your way of life, and perhaps a scholar would only worship one (or none at all, as they so frequently do), but a farmer would have many because it gives him/her comfort in knowing that there are some deities to aid with his/her crops. As much as I hate to point this out, but the notion of 'only one' is a post-modernist ideal, which we bring into the game settings as players. Yes, there maybe some who chose to only have one, but there may be others who conform to notion that 'more is better, all is best', as if worshiping all the gods would give them a leg-up on everyone else.
And now I'm even more curious. When you mention worshiping, how is this done? Since there is only the Laanx Temple that I know of, how are the other gods worshiped? Do the priests partake in celibacy? Are there icons and images? are there saints (not sure of the Yliakum-ism for it) that are also prayed to? Is there a liturgy? How do couples of different religions get married? is it a religion sanctioned event? Or is it state-sanctioned? Are there different sects with the various worshiping of the gods? Are there monasteries and convents for those who wish to fully devote their lives?