Could anyone give some advice on Griffin Vises? I have a standard clamp type vise that came in a kit which will do great for now as I am just starting out . but eventually I would like to get one of those fancy rotary wing-dings. I have been looking at the griffin montana mongoose vise. Has anyone had any expierience with this one? I guess my main concern would be the strength of the jaws because on my vice the hook does slip a little sometimes.