Does anyone have any experience with battery heated gloves or battery heated glove liners??Doing a Web search I see that Brookstone sells battery heated glove liners for $50 and Hammacher Schlemmer sells imported battery heated gloves for $25.....any testimonials on either?? I rode today, wind chill low 20s....stayed warm except finger tips which became painful after 30 minutes .Really don't want to go the 12v route!!:dontknow: