Has anyone tried the Spider from Grivel: "The Spider is a superlight polyamide and steel instep crampon that may be attached to any boot or shoe regardless of size, without tools. Though not as technical as Gripper the Spider will likely be purchased and carried when the more expensive, heavier Gripper is too much. Spider may be used by hikers, hunters, firefighters, UPS drivers, alpine rock climbers (they will fit on rock shoes), soldiers, snow-making teams or anyone that needs to improve the security of their footwear when facing a variety of slippery conditions." I was unable to quickly find info on the Gripper, mentioned above. I have Stabilicers and really like them but something a little lighter would be nice. I haven't seen the Spider or Gripper mentioned on previous posts...