The new issue of Blade has an article about pocket sharpeners made by Benchmade,Smith Abrasives and some others,which generally consist of a plastic housing which holds two carbide cutters in a V slot.Some also have another slot with ceramic hones to polish the edge.Are these type of sharpeners any good,or will they just ruin my knife?I'm looking for a simple sharpener to bring into the field,on trips etc. and I need something simple that works well.Please keep in mind that I consider myself a sharpening retard(or sharpening challenged).I do have a sharpmaker 204 which works well for me,but just looking for something smaller.Anyone have any experience with these pocket V slot type things?