The Invader, with its modified wharncliffe style blade, is a tactical knife made for use. The thumbrest notches are deep enough and wide enough to support hard thumb pressure. Index and little finger cut-outs ensure the firmest of grips. Cut-outs in the G-10 scales on the spine expose file notches in the liners for a reverse grip is desired/needed. Either hand opening via the dual thumbstuds. Solid lockup when opened. Linerlock closure. A super tactical by Andre'.