Just some caution on the spyderwire. I havn't handled it, but i THINK that a different set of knots are required when using it. You can easily learn and practice them, but you might not be the only person who uses your PSK (one of the reasons that basic survival instructions are included in some survival experts' kits). If you do decide to use spyderwire, try include a knot sheet to try explain the knots to others (possibly when you can't <img src="images/graemlins/shocked.gif" alt="" />)