Hey Luigi,

Sorry you've had unhappy experiences with the shoe covers. But in the interest of fairness, note that the product description doesn't claim full-on waterproofness - it says "Nothing is totally waterproof, but these booties are close." (Also in the interest of fairness, I'll note that I work for MEC. In fact, I'm the guy who wrote that description. But I'm expressing only my personal opinion here - I'm not a spokesdude for MEC.)
Since we don't have control over the length of pants you wear with these covers, we can't really assure they'll be waterproof for every user. Personally, I've switched from using hardshell pants for winter commutting to tights with waterproof or water-resistant front panels. They move more easily and don't rise to create that leaky gap between the cuff and the shoe cover top. I cycle commute pretty much year-round in Vancouver, and we get some pretty wet winters - as long as I've sealed the Velcro on the covers right, my shoes stay dry.
And please remember that MEC offers the Rock Solid Guarantee - if anything (including these covers or the gloves you started the thread with) "hasn't met your expectations, you can bring it back. .... simply return the item for exchange, refund, repair, or credit."

Happy wheels to you.