I live in Oregon, which means it rains more often than it shines and occasionally we see snow that is poorly managed. I am planning to purchase the XB-610 model at the beginning of next month (woo student loans check!) and would like to know if it would fry if I rode it in the rain. I know the Lithium ones actually say waterproof, which leads me to wonder if it would be possible to weather-proof the 610, if it isn't already.
Also, on the topic of a (hopefully) fantastic purchase, would this seat a seven year old (50lbs) behind me (180lbs) very well?