I had used one before and really liked it. (And T-Mobile now offers unlimited GPRS for $20/month!) But I know I have weird tastes -- I liked my Visor Phone. Big, bulky, overdesigned and overpriced are not always turn-offs for me. I sunk some not-inconsiderable time and money into trying to build a real wearable once, to give you an idea of what I'm really looking for. Right now, something like the Pocket PC Phone seems like the best combination of ease/price/functionality to the ubiquitous computing/wearable/gargoyle concept I dream of.
Re: Curious