The ornamental design for a combinedskinner and survivalknife, as shown and described.
FIG. 1 is a perspective view of a combined skinner and survival knife showing my new design;
FIG. 2 is a front view, the rear view being a mirror image thereof;
FIG. 3 is a top view thereof;
FIG. 4 is a bottom view thereof;
FIG. 5 is a side view thereof; and,
FIG. 6 is an opposite side view thereof.
In FIG. 1, the broken lines showing the environmental structure for purposes of illustrating the combined skinner and survival knife in a condition of use. The broken lines and the structure they depict form no part of the claimed design.