I'm up in Calgary, and people that come into my home always point at my Duo and go "WTF is that?" Guys will recognize my other systems - the Saturn and the Dreamcast - but not a single person has recognized the Duo. Granted I haven't been up here that long, but still...
But I guess even in a huge market like LA, where I first bought the Duo/TG-16, a few had the TG16 base unit, but I didn't know that many that actually had the CD Rom system. (I recall 1 other kid in High school that I personally knew of). Hell, I didn't get the CD-Rom till after the Duo was released and the price was dropped to a clearance price.