If the contents of a leaked consumer survey from Garmin are to be believed, it looks like the answer is yes. Following a series of questions about user habits and preferences, Garmin drops a real bomb, asking survey-takers if they would be inclined to purchase a Nuviphone if it was offered by AT&T for a 2-year subsidized price of $499, requiring a $20/month data add-on that includes unlimited browsing and GPS navigation. $499 is, umm, a little high for an unproven device, but we’re certainly a fan of the $20/month data add on, especially considering this thing packs full HSDPA and GPS support.