Yes as a professional french sommelier I feel the interest in canadian ice wine rather justified...
however (theres always a however!) certain things I would like to bring to light...
the wine is rather expensive...in fact it is comparable to the famous sauternes of france...a wine which probably defines and sets the benchmark for all dessert wines worldwide!
canada does an excellent job of exploiting their harsh weather to reap the benefits in the form of this pleasurable wine but their soil is nothing of the great and thus the wine though rich in sweetness lacks the other elements which make a wine truly great. given the high acidity and sugar content it is difficult for the untrained palate to correctly gauge a wine for defects...
even in france, the muscat grape is exploited to give dessert wines but with each region the characteristics change a lot and even then they can be of extremely varying quality but much cheaper than any of their counterparts...cross borders and the moscato initaly is another story altogether! the clairette (especially in the region of Die) gives a sparkling sweet wine which could give most good champagnes a run for their money!
the german ice wine (or eiswein) is the real deal...they have the soil, they have the history and the savoir-faire...they also have the best ones in the world...and surprise surprise they dont cost as much as canadian wines!
no disrespect but I guess I am a bit biased when it comes to wines and while I do raise my glass to new world wines, I usually fill it with wines from the old world...